28570036 has 18 divisors (see below), whose sum is σ = 54956930. Its totient is φ = 12986160.

The previous prime is 28570007. The next prime is 28570039. The reversal of 28570036 is 63007582.

It can be written as a sum of positive squares in only one way, i.e., 19749136 + 8820900 = 4444^2 + 2970^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28570039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29031 + ... + 29998.

Almost surely, 2^28570036 is an apocalyptic number.

It is an amenable number.

28570036 is a deficient number, since it is larger than the sum of its proper divisors (26386894).

28570036 is a wasteful number, since it uses less digits than its factorization.

28570036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59055 (or 59042 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 28570036 is about 5345.0945735319. The cubic root of 28570036 is about 305.7057418722.

The spelling of 28570036 in words is "twenty-eight million, five hundred seventy thousand, thirty-six".