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45025720 = 23523109449
BaseRepresentation
bin1010101111000…
…0100110111000
310010201112200021
42223300212320
543011310340
64245020224
71054466215
oct253604670
9103645607
1045025720
1123463543
12130b4674
13943624c
145da0b0c
153e45e4a
hex2af09b8

45025720 has 64 divisors (see below), whose sum is σ = 106920000. Its totient is φ = 17031168.

The previous prime is 45025711. The next prime is 45025727. The reversal of 45025720 is 2752054.

45025720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45025727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100056 + ... + 100504.

It is an arithmetic number, because the mean of its divisors is an integer number (1670625).

Almost surely, 245025720 is an apocalyptic number.

45025720 is a gapful number since it is divisible by the number (40) 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 45025720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53460000).

45025720 is an abundant number, since it is smaller than the sum of its proper divisors (61894280).

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

45025720 is a wasteful number, since it uses less digits than its factorization.

45025720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 45025720 is about 6710.1207142644. The cubic root of 45025720 is about 355.7570829468.

Adding to 45025720 its reverse (2752054), we get a palindrome (47777774).

The spelling of 45025720 in words is "forty-five million, twenty-five thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 20 23 40 46 92 109 115 184 218 230 436 449 460 545 872 898 920 1090 1796 2180 2245 2507 3592 4360 4490 5014 8980 10028 10327 12535 17960 20056 20654 25070 41308 48941 50140 51635 82616 97882 100280 103270 195764 206540 244705 391528 413080 489410 978820 1125643 1957640 2251286 4502572 5628215 9005144 11256430 22512860 45025720