28023475 has 6 divisors (see below), whose sum is σ = 34749140. Its totient is φ = 22418760.

The previous prime is 28023469. The next prime is 28023481. The reversal of 28023475 is 57432082.

It is an interprime number because it is at equal distance from previous prime (28023469) and next prime (28023481).

It is not a de Polignac number, because 28023475 - 2¹⁵ = 27990707 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560445 + ... + 560494.

Almost surely, 2^28023475 is an apocalyptic number.

28023475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28023475 is a deficient number, since it is larger than the sum of its proper divisors (6725665).

28023475 is a wasteful number, since it uses less digits than its factorization.

28023475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120949 (or 1120944 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28023475 is about 5293.7203363986. The cubic root of 28023475 is about 303.7437352996.

The spelling of 28023475 in words is "twenty-eight million, twenty-three thousand, four hundred seventy-five".