28560356 has 18 divisors (see below), whose sum is σ = 54938310. Its totient is φ = 12981760.

The previous prime is 28560353. The next prime is 28560359. The reversal of 28560356 is 65306582.

It is an interprime number because it is at equal distance from previous prime (28560353) and next prime (28560359).

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 5134756 = 4840^2 + 2266^2 .

It is not an unprimeable number, because it can be changed into a prime (28560353) 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, 29021 + ... + 29988.

Almost surely, 2^28560356 is an apocalyptic number.

It is an amenable number.

28560356 is a deficient number, since it is larger than the sum of its proper divisors (26377954).

28560356 is a wasteful number, since it uses less digits than its factorization.

28560356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59035 (or 59022 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 28560356 is about 5344.1889936641. The cubic root of 28560356 is about 305.6712119209.

The spelling of 28560356 in words is "twenty-eight million, five hundred sixty thousand, three hundred fifty-six".