28856236 has 6 divisors (see below), whose sum is σ = 50498420. Its totient is φ = 14428116.

The previous prime is 28856209. The next prime is 28856273. The reversal of 28856236 is 63265882.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607026 + ... + 3607033.

Almost surely, 2^28856236 is an apocalyptic number.

It is an amenable number.

28856236 is a deficient number, since it is larger than the sum of its proper divisors (21642184).

28856236 is a wasteful number, since it uses less digits than its factorization.

28856236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7214063 (or 7214061 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 28856236 is about 5371.8000707398. The cubic root of 28856236 is about 306.7231533209.

It can be divided in two parts, 28856 and 236, that added together give a palindrome (29092).

The spelling of 28856236 in words is "twenty-eight million, eight hundred fifty-six thousand, two hundred thirty-six".