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28525801962 = 2371921881401
BaseRepresentation
bin11010100100010001…
…010011000111101010
32201122000022212211210
4122210101103013222
5431410101130322
621034330533550
72026616213250
oct324421230752
981560285753
1028525801962
1111109087249
1256412972b6
1328c7b38078
1415487405d0
15b1e4c970c
hex6a44531ea

28525801962 has 48 divisors (see below), whose sum is σ = 68814159552. Its totient is φ = 7721265600.

The previous prime is 28525801961. The next prime is 28525802023. The reversal of 28525801962 is 26910852582.

It is not an unprimeable number, because it can be changed into a prime (28525801961) 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, 925539 + ... + 955862.

It is an arithmetic number, because the mean of its divisors is an integer number (1433628324).

Almost surely, 228525801962 is an apocalyptic number.

28525801962 is an abundant number, since it is smaller than the sum of its proper divisors (40288357590).

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

28525801962 is a wasteful number, since it uses less digits than its factorization.

28525801962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881451 (or 1881432 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 28525801962 in words is "twenty-eight billion, five hundred twenty-five million, eight hundred one thousand, nine hundred sixty-two".

Divisors: 1 2 3 6 7 14 19 21 38 42 57 114 133 266 361 399 722 798 1083 2166 2527 5054 7581 15162 1881401 3762802 5644203 11288406 13169807 26339614 35746619 39509421 71493238 79018842 107239857 214479714 250226333 500452666 679185761 750678999 1358371522 1501357998 2037557283 4075114566 4754300327 9508600654 14262900981 28525801962