28934425 has 24 divisors (see below), whose sum is σ = 40919256. Its totient is φ = 20106240.

The previous prime is 28934413. The next prime is 28934453. The reversal of 28934425 is 52443982.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 4064256 + 24870169 = 2016^2 + 4987^2 .

It is not a de Polignac number, because 28934425 - 2⁵ = 28934393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2907 + ... + 8143.

It is an arithmetic number, because the mean of its divisors is an integer number (1704969).

Almost surely, 2^28934425 is an apocalyptic number.

28934425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28934425 is a deficient number, since it is larger than the sum of its proper divisors (11984831).

28934425 is a wasteful number, since it uses less digits than its factorization.

28934425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5272 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 28934425 is about 5379.0728755056. The cubic root of 28934425 is about 306.9999363388. Note that the first 4 decimals are identical.

The spelling of 28934425 in words is "twenty-eight million, nine hundred thirty-four thousand, four hundred twenty-five".