102639696 has 20 divisors (see below), whose sum is σ = 265152672. Its totient is φ = 34213216.

The previous prime is 102639661. The next prime is 102639697. The reversal of 102639696 is 696936201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102639697) 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, 1069116 + ... + 1069211.

Almost surely, 2^102639696 is an apocalyptic number.

102639696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

102639696 is an abundant number, since it is smaller than the sum of its proper divisors (162512976).

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

102639696 is a wasteful number, since it uses less digits than its factorization.

102639696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138338 (or 2138332 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 102639696 is about 10131.1251102728. The cubic root of 102639696 is about 468.2075929060.

The spelling of 102639696 in words is "one hundred two million, six hundred thirty-nine thousand, six hundred ninety-six".