28531153356 has 12 divisors (see below), whose sum is σ = 66572691192. Its totient is φ = 9510384448.

The previous prime is 28531153337. The next prime is 28531153381. The reversal of 28531153356 is 65335113582.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188798045 + ... + 1188798068.

It is an arithmetic number, because the mean of its divisors is an integer number (5547724266).

Almost surely, 2^28531153356 is an apocalyptic number.

It is an amenable number.

28531153356 is an abundant number, since it is smaller than the sum of its proper divisors (38041537836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28531153356 is a wasteful number, since it uses less digits than its factorization.

28531153356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377596120 (or 2377596118 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 28531153356 in words is "twenty-eight billion, five hundred thirty-one million, one hundred fifty-three thousand, three hundred fifty-six".