102891236 has 24 divisors (see below), whose sum is σ = 214730880. Its totient is φ = 42178752.

The previous prime is 102891227. The next prime is 102891253. The reversal of 102891236 is 632198201.

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, 79241 + ... + 80528.

It is an arithmetic number, because the mean of its divisors is an integer number (8947120).

Almost surely, 2^102891236 is an apocalyptic number.

It is an amenable number.

102891236 is an abundant number, since it is smaller than the sum of its proper divisors (111839644).

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

102891236 is a wasteful number, since it uses less digits than its factorization.

102891236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159803 (or 159801 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 102891236 is about 10143.5317320941. The cubic root of 102891236 is about 468.5897610282.

The spelling of 102891236 in words is "one hundred two million, eight hundred ninety-one thousand, two hundred thirty-six".