28190474 has 16 divisors (see below), whose sum is σ = 45626112. Its totient is φ = 12985968.

The previous prime is 28190473. The next prime is 28190497. The reversal of 28190474 is 47409182.

It is not an unprimeable number, because it can be changed into a prime (28190473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25007 + ... + 26109.

It is an arithmetic number, because the mean of its divisors is an integer number (2851632).

Almost surely, 2^28190474 is an apocalyptic number.

28190474 is a deficient number, since it is larger than the sum of its proper divisors (17435638).

28190474 is a wasteful number, since it uses less digits than its factorization.

28190474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 28190474 is about 5309.4702183928. The cubic root of 28190474 is about 304.3459027261.

The spelling of 28190474 in words is "twenty-eight million, one hundred ninety thousand, four hundred seventy-four".