28264874 has 12 divisors (see below), whose sum is σ = 46602402. Its totient is φ = 12847560.

The previous prime is 28264871. The next prime is 28264877. The reversal of 28264874 is 47846282.

It is an interprime number because it is at equal distance from previous prime (28264871) and next prime (28264877).

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 3214849 = 5005^2 + 1793^2 .

It is not an unprimeable number, because it can be changed into a prime (28264871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58157 + ... + 58640.

Almost surely, 2^28264874 is an apocalyptic number.

28264874 is a deficient number, since it is larger than the sum of its proper divisors (18337528).

28264874 is a wasteful number, since it uses less digits than its factorization.

28264874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116821 (or 116810 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 28264874 is about 5316.4719504574. The cubic root of 28264874 is about 304.6134096896.

It can be divided in two parts, 282 and 64874, that added together give a palindrome (65156).

The spelling of 28264874 in words is "twenty-eight million, two hundred sixty-four thousand, eight hundred seventy-four".