28936572 has 24 divisors (see below), whose sum is σ = 77164416. Its totient is φ = 8267568.

The previous prime is 28936541. The next prime is 28936613. The reversal of 28936572 is 27563982.

It is a super-2 number, since 2×28936572² = 1674650398222368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 172158 + ... + 172325.

It is an arithmetic number, because the mean of its divisors is an integer number (3215184).

Almost surely, 2^28936572 is an apocalyptic number.

It is an amenable number.

28936572 is an abundant number, since it is smaller than the sum of its proper divisors (48227844).

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

28936572 is a wasteful number, since it uses less digits than its factorization.

28936572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344497 (or 344495 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 28936572 is about 5379.2724415110. The cubic root of 28936572 is about 307.0075295150.

The spelling of 28936572 in words is "twenty-eight million, nine hundred thirty-six thousand, five hundred seventy-two".