28582970 has 32 divisors (see below), whose sum is σ = 55777680. Its totient is φ = 10545600.

The previous prime is 28582943. The next prime is 28582979. The reversal of 28582970 is 7928582.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10118761 + 18464209 = 3181^2 + 4297^2 .

It is not an unprimeable number, because it can be changed into a prime (28582979) 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 in 15 ways as a sum of consecutive naturals, for example, 21320 + ... + 22620.

Almost surely, 2^28582970 is an apocalyptic number.

28582970 is a deficient number, since it is larger than the sum of its proper divisors (27194710).

28582970 is a wasteful number, since it uses less digits than its factorization.

28582970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28582970 is about 5346.3043310309. The cubic root of 28582970 is about 305.7518671383.

The spelling of 28582970 in words is "twenty-eight million, five hundred eighty-two thousand, nine hundred seventy".