27725428 has 12 divisors (see below), whose sum is σ = 48560260. Its totient is φ = 13851072.

The previous prime is 27725387. The next prime is 27725431. The reversal of 27725428 is 82452772.

It can be written as a sum of positive squares in 2 ways, for example, as 5560164 + 22165264 = 2358^2 + 4708^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4600 + ... + 8752.

Almost surely, 2^27725428 is an apocalyptic number.

It is an amenable number.

27725428 is a deficient number, since it is larger than the sum of its proper divisors (20834832).

27725428 is a wasteful number, since it uses less digits than its factorization.

27725428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5826 (or 5824 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 27725428 is about 5265.4940888771. The cubic root of 27725428 is about 302.6630607793.

The spelling of 27725428 in words is "twenty-seven million, seven hundred twenty-five thousand, four hundred twenty-eight".