28236817504 has 48 divisors (see below), whose sum is σ = 63547158528. Its totient is φ = 12098765952.

The previous prime is 28236817481. The next prime is 28236817517. The reversal of 28236817504 is 40571863282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1221219 + ... + 1244125.

It is an arithmetic number, because the mean of its divisors is an integer number (1323899136).

Almost surely, 2^28236817504 is an apocalyptic number.

It is an amenable number.

28236817504 is an abundant number, since it is smaller than the sum of its proper divisors (35310341024).

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

28236817504 is a wasteful number, since it uses less digits than its factorization.

28236817504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28427 (or 28419 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 28236817504 in words is "twenty-eight billion, two hundred thirty-six million, eight hundred seventeen thousand, five hundred four".