28131265372 has 48 divisors (see below), whose sum is σ = 60581848320. Its totient is φ = 11154730752.

The previous prime is 28131265319. The next prime is 28131265433. The reversal of 28131265372 is 27356213182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472758 + ... + 528925.

It is an arithmetic number, because the mean of its divisors is an integer number (1262121840).

Almost surely, 2^28131265372 is an apocalyptic number.

It is an amenable number.

28131265372 is an abundant number, since it is smaller than the sum of its proper divisors (32450582948).

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

28131265372 is a wasteful number, since it uses less digits than its factorization.

28131265372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001770 (or 1001768 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The spelling of 28131265372 in words is "twenty-eight billion, one hundred thirty-one million, two hundred sixty-five thousand, three hundred seventy-two".