28161022 has 16 divisors (see below), whose sum is σ = 43084800. Its totient is φ = 13802400.

The previous prime is 28161017. The next prime is 28161031. The reversal of 28161022 is 22016182.

It is a junction number, because it is equal to n+sod(n) for n = 28160984 and 28161002.

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, 21379 + ... + 22657.

It is an arithmetic number, because the mean of its divisors is an integer number (2692800).

Almost surely, 2^28161022 is an apocalyptic number.

28161022 is a deficient number, since it is larger than the sum of its proper divisors (14923778).

28161022 is a wasteful number, since it uses less digits than its factorization.

28161022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28161022 is about 5306.6959588806. The cubic root of 28161022 is about 304.2398773253.

The spelling of 28161022 in words is "twenty-eight million, one hundred sixty-one thousand, twenty-two".