28620544 has 18 divisors (see below), whose sum is σ = 57129800. Its totient is φ = 14310144.

The previous prime is 28620541. The next prime is 28620547. The reversal of 28620544 is 44502682.

It is an interprime number because it is at equal distance from previous prime (28620541) and next prime (28620547).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28620541) by changing a digit.

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 as a sum of consecutive naturals, namely, 55644 + ... + 56155.

Almost surely, 2^28620544 is an apocalyptic number.

It is an amenable number.

28620544 is a deficient number, since it is larger than the sum of its proper divisors (28509256).

28620544 is an equidigital number, since it uses as much as digits as its factorization.

28620544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111815 (or 111801 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 28620544 is about 5349.8171931385. The cubic root of 28620544 is about 305.8857847625.

The spelling of 28620544 in words is "twenty-eight million, six hundred twenty thousand, five hundred forty-four".