102565988 has 12 divisors (see below), whose sum is σ = 205132032. Its totient is φ = 43956840.

The previous prime is 102565987. The next prime is 102565997. The reversal of 102565988 is 889565201.

102565988 is an admirable number.

It is a super-2 number, since 2×102565988² = 21039563788832288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102565987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1831508 + ... + 1831563.

It is an arithmetic number, because the mean of its divisors is an integer number (17094336).

Almost surely, 2^102565988 is an apocalyptic number.

It is an amenable number.

102565988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

102565988 is a wasteful number, since it uses less digits than its factorization.

102565988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663082 (or 3663080 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 102565988 is about 10127.4867563478. The cubic root of 102565988 is about 468.0954890746.

The spelling of 102565988 in words is "one hundred two million, five hundred sixty-five thousand, nine hundred eighty-eight".