28551056736 has 48 divisors (see below), whose sum is σ = 74975032944. Its totient is φ = 9513398784.

The previous prime is 28551056731. The next prime is 28551056749. The reversal of 28551056736 is 63765015582.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28551056731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203310 + ... + 313746.

It is an arithmetic number, because the mean of its divisors is an integer number (1561979853).

Almost surely, 2^28551056736 is an apocalyptic number.

It is an amenable number.

28551056736 is an abundant number, since it is smaller than the sum of its proper divisors (46423976208).

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

28551056736 is a wasteful number, since it uses less digits than its factorization.

28551056736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113143 (or 113135 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 28551056736 in words is "twenty-eight billion, five hundred fifty-one million, fifty-six thousand, seven hundred thirty-six".