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30795480 = 23325131653
BaseRepresentation
bin111010101111…
…0011011011000
32010221120110100
41311132123120
530340423410
63020015400
7522520512
oct165363330
963846410
1030795480
1116424111
12a391560
1364c30a1
144138bb2
152a848c0
hex1d5e6d8

30795480 has 96 divisors (see below), whose sum is σ = 101003760. Its totient is φ = 8136960.

The previous prime is 30795473. The next prime is 30795487. The reversal of 30795480 is 8459703.

It is an interprime number because it is at equal distance from previous prime (30795473) and next prime (30795487).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30795487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46834 + ... + 47486.

Almost surely, 230795480 is an apocalyptic number.

30795480 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 30795480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50501880).

30795480 is an abundant number, since it is smaller than the sum of its proper divisors (70208280).

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

30795480 is a wasteful number, since it uses less digits than its factorization.

30795480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 30795480 is about 5549.3675315301. The cubic root of 30795480 is about 313.4457068895.

The spelling of 30795480 in words is "thirty million, seven hundred ninety-five thousand, four hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 131 180 262 360 393 524 653 655 786 1048 1179 1306 1310 1572 1959 1965 2358 2612 2620 3144 3265 3918 3930 4716 5224 5240 5877 5895 6530 7836 7860 9432 9795 11754 11790 13060 15672 15720 19590 23508 23580 26120 29385 39180 47016 47160 58770 78360 85543 117540 171086 235080 256629 342172 427715 513258 684344 769887 855430 1026516 1283145 1539774 1710860 2053032 2566290 3079548 3421720 3849435 5132580 6159096 7698870 10265160 15397740 30795480