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28810625042 = 2241227326297
BaseRepresentation
bin11010110101001111…
…110100000000010010
32202100212021101122202
4122311033310000102
5433001010000132
621122503403202
72036645162243
oct326517640022
982325241582
1028810625042
1111244935021
125700753502
132941b50b34
1415744c2cca
15b394db762
hex6b53f4012

28810625042 has 16 divisors (see below), whose sum is σ = 43415999352. Its totient is φ = 14338682880.

The previous prime is 28810625029. The next prime is 28810625057. The reversal of 28810625042 is 24052601882.

It can be written as a sum of positive squares in 4 ways, for example, as 28740081841 + 70543201 = 169529^2 + 8399^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28810624987 and 28810625005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082438 + ... + 1108734.

Almost surely, 228810625042 is an apocalyptic number.

28810625042 is a deficient number, since it is larger than the sum of its proper divisors (14605374310).

28810625042 is a wasteful number, since it uses less digits than its factorization.

28810625042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28813.

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 28810625042 in words is "twenty-eight billion, eight hundred ten million, six hundred twenty-five thousand, forty-two".

Divisors: 1 2 241 482 2273 4546 26297 52594 547793 1095586 6337577 12675154 59773081 119546162 14405312521 28810625042