28872190 has 16 divisors (see below), whose sum is σ = 52291728. Its totient is φ = 11477376.

The previous prime is 28872187. The next prime is 28872203. The reversal of 28872190 is 9127882.

It is a super-2 number, since 2×28872190² = 1667206710792200, which contains 22 as substring.

It is a congruent number.

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, 7227 + ... + 10486.

It is an arithmetic number, because the mean of its divisors is an integer number (3268233).

Almost surely, 2^28872190 is an apocalyptic number.

28872190 is a deficient number, since it is larger than the sum of its proper divisors (23419538).

28872190 is a wasteful number, since it uses less digits than its factorization.

28872190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17883.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 28872190 is about 5373.2848426265. The cubic root of 28872190 is about 306.7796698122.

The spelling of 28872190 in words is "twenty-eight million, eight hundred seventy-two thousand, one hundred ninety".