102809616 has 80 divisors (see below), whose sum is σ = 326895744. Its totient is φ = 27113472.

The previous prime is 102809533. The next prime is 102809639. The reversal of 102809616 is 616908201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7401 + ... + 16136.

Almost surely, 2^102809616 is an apocalyptic number.

102809616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

102809616 is an abundant number, since it is smaller than the sum of its proper divisors (224086128).

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

102809616 is a wasteful number, since it uses less digits than its factorization.

102809616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23568 (or 23562 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 102809616 is about 10139.5076803561. The cubic root of 102809616 is about 468.4658229897.

The spelling of 102809616 in words is "one hundred two million, eight hundred nine thousand, six hundred sixteen".