28886356 has 6 divisors (see below), whose sum is σ = 50551130. Its totient is φ = 14443176.

The previous prime is 28886353. The next prime is 28886357. The reversal of 28886356 is 65368882.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23522500 + 5363856 = 4850^2 + 2316^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610791 + ... + 3610798.

Almost surely, 2^28886356 is an apocalyptic number.

It is an amenable number.

28886356 is a deficient number, since it is larger than the sum of its proper divisors (21664774).

28886356 is a wasteful number, since it uses less digits than its factorization.

28886356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7221593 (or 7221591 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 28886356 is about 5374.6028690500. The cubic root of 28886356 is about 306.8298349277.

The spelling of 28886356 in words is "twenty-eight million, eight hundred eighty-six thousand, three hundred fifty-six".