28969190 has 64 divisors (see below), whose sum is σ = 59719680. Its totient is φ = 10053120.

The previous prime is 28969189. The next prime is 28969223. The reversal of 28969190 is 9196982.

It is a super-2 number, since 2×28969190² = 1678427938512200, 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 31 ways as a sum of consecutive naturals, for example, 121091 + ... + 121329.

It is an arithmetic number, because the mean of its divisors is an integer number (933120).

Almost surely, 2^28969190 is an apocalyptic number.

28969190 is an abundant number, since it is smaller than the sum of its proper divisors (30750490).

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

28969190 is a wasteful number, since it uses less digits than its factorization.

28969190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 28969190 is about 5382.3034102510. The cubic root of 28969190 is about 307.1228416224.

The spelling of 28969190 in words is "twenty-eight million, nine hundred sixty-nine thousand, one hundred ninety".