28756698084 has 45 divisors (see below), whose sum is σ = 75183669561. Its totient is φ = 9584548560.

The previous prime is 28756698043. The next prime is 28756698101. The reversal of 28756698084 is 48089665782.

The square root of 28756698084 is 169578.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 9346635684 + 19410062400 = 96678^2 + 139320^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3047694 + ... + 3057114.

Almost surely, 2^28756698084 is an apocalyptic number.

28756698084 is the 169578-th square number.

It is an amenable number.

28756698084 is an abundant number, since it is smaller than the sum of its proper divisors (46426971477).

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

28756698084 is an frugal number, since it uses more digits than its factorization.

28756698084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18858 (or 9426 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 28756698084 in words is "twenty-eight billion, seven hundred fifty-six million, six hundred ninety-eight thousand, eighty-four".