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520289952 = 25371359557
BaseRepresentation
bin11111000000101…
…111111010100000
31100021000110122020
4133000233322200
52031143234302
6123343341440
715615251220
oct3700577240
91307013566
10520289952
112477655a6
121262b1880
1383a3a4a0
144d158080
1530a24ebc
hex1f02fea0

520289952 has 96 divisors (see below), whose sum is σ = 1680964992. Its totient is φ = 137217024.

The previous prime is 520289951. The next prime is 520290013. The reversal of 520289952 is 259982025.

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

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (520289951) 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, 21043 + ... + 38514.

It is an arithmetic number, because the mean of its divisors is an integer number (17510052).

Almost surely, 2520289952 is an apocalyptic number.

520289952 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

520289952 is an abundant number, since it is smaller than the sum of its proper divisors (1160675040).

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

520289952 is a wasteful number, since it uses less digits than its factorization.

520289952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59590 (or 59582 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 520289952 is about 22809.8652341481. The cubic root of 520289952 is about 804.2945877249.

The spelling of 520289952 in words is "five hundred twenty million, two hundred eighty-nine thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 32 39 42 48 52 56 78 84 91 96 104 112 156 168 182 208 224 273 312 336 364 416 546 624 672 728 1092 1248 1456 2184 2912 4368 8736 59557 119114 178671 238228 357342 416899 476456 714684 774241 833798 952912 1250697 1429368 1548482 1667596 1905824 2322723 2501394 2858736 3096964 3335192 4645446 5002788 5419687 5717472 6193928 6670384 9290892 10005576 10839374 12387856 13340768 16259061 18581784 20011152 21678748 24775712 32518122 37163568 40022304 43357496 65036244 74327136 86714992 130072488 173429984 260144976 520289952