28102996 has 12 divisors (see below), whose sum is σ = 49733460. Its totient is φ = 13893440.

The previous prime is 28102973. The next prime is 28103003. The reversal of 28102996 is 69920182.

It can be written as a sum of positive squares in 2 ways, for example, as 4928400 + 23174596 = 2220^2 + 4814^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39115 + ... + 39826.

It is an arithmetic number, because the mean of its divisors is an integer number (4144455).

Almost surely, 2^28102996 is an apocalyptic number.

It is an amenable number.

28102996 is a deficient number, since it is larger than the sum of its proper divisors (21630464).

28102996 is a wasteful number, since it uses less digits than its factorization.

28102996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79034 (or 79032 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 28102996 is about 5301.2258959603. The cubic root of 28102996 is about 304.0307707773.

The spelling of 28102996 in words is "twenty-eight million, one hundred two thousand, nine hundred ninety-six".