28884625 has 32 divisors (see below), whose sum is σ = 44957952. Its totient is φ = 18000000.

The previous prime is 28884613. The next prime is 28884631. The reversal of 28884625 is 52648882.

It is not a de Polignac number, because 28884625 - 2⁵ = 28884593 is a prime.

It is a super-2 number, since 2×28884625² = 1668643122781250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8125 + ... + 11125.

It is an arithmetic number, because the mean of its divisors is an integer number (1404936).

Almost surely, 2^28884625 is an apocalyptic number.

28884625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28884625 is a deficient number, since it is larger than the sum of its proper divisors (16073327).

28884625 is a wasteful number, since it uses less digits than its factorization.

28884625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034 (or 3024 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 28884625 is about 5374.4418314835. The cubic root of 28884625 is about 306.8237059320.

The spelling of 28884625 in words is "twenty-eight million, eight hundred eighty-four thousand, six hundred twenty-five".