102028904 has 8 divisors (see below), whose sum is σ = 191304210. Its totient is φ = 51014448.

The previous prime is 102028903. The next prime is 102028907. The reversal of 102028904 is 409820201.

It can be written as a sum of positive squares in only one way, i.e., 59752900 + 42276004 = 7730^2 + 6502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (102028903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6376799 + ... + 6376814.

Almost surely, 2^102028904 is an apocalyptic number.

It is an amenable number.

102028904 is a deficient number, since it is larger than the sum of its proper divisors (89275306).

102028904 is a wasteful number, since it uses less digits than its factorization.

102028904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12753619 (or 12753615 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 102028904 is about 10100.9357982318. The cubic root of 102028904 is about 467.2770023241.

The spelling of 102028904 in words is "one hundred two million, twenty-eight thousand, nine hundred four".