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378912480 = 25356112941
BaseRepresentation
bin10110100101011…
…011111011100000
3222101222202012120
4112211123323200
51234000144410
6101333224240
712250463052
oct2645337340
9871882176
10378912480
11184982611
12a6a92080
136066a18b
14384758d2
15233ea570
hex1695bee0

378912480 has 96 divisors (see below), whose sum is σ = 1213234848. Its totient is φ = 99379200.

The previous prime is 378912467. The next prime is 378912481. The reversal of 378912480 is 84219873.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378912481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22810 + ... + 35750.

It is an arithmetic number, because the mean of its divisors is an integer number (12637863).

Almost surely, 2378912480 is an apocalyptic number.

378912480 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378912480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (606617424).

378912480 is an abundant number, since it is smaller than the sum of its proper divisors (834322368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378912480 is a wasteful number, since it uses less digits than its factorization.

378912480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13020 (or 13012 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 378912480 is about 19465.6744039347. The cubic root of 378912480 is about 723.6240124213.

The spelling of 378912480 in words is "three hundred seventy-eight million, nine hundred twelve thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 61 80 96 120 122 160 183 240 244 305 366 480 488 610 732 915 976 1220 1464 1830 1952 2440 2928 3660 4880 5856 7320 9760 12941 14640 25882 29280 38823 51764 64705 77646 103528 129410 155292 194115 207056 258820 310584 388230 414112 517640 621168 776460 789401 1035280 1242336 1552920 1578802 2070560 2368203 3105840 3157604 3947005 4736406 6211680 6315208 7894010 9472812 11841015 12630416 15788020 18945624 23682030 25260832 31576040 37891248 47364060 63152080 75782496 94728120 126304160 189456240 378912480