102981904 has 45 divisors (see below), whose sum is σ = 207796503. Its totient is φ = 49441056.

The previous prime is 102981899. The next prime is 102981911. The reversal of 102981904 is 409189201.

The square root of 102981904 is 10148.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102981904.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1745427 + ... + 1745485.

Almost surely, 2^102981904 is an apocalyptic number.

102981904 is the 10148-th square number.

It is an amenable number.

102981904 is an abundant number, since it is smaller than the sum of its proper divisors (104814599).

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

102981904 is an frugal number, since it uses more digits than its factorization.

102981904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The cubic root of 102981904 is about 468.7273614193.

Multiplying 102981904 by its product of nonzero digits (5184), we get a square (533858190336 = 730656²).

The spelling of 102981904 in words is "one hundred two million, nine hundred eighty-one thousand, nine hundred four".