28737812275 has 6 divisors (see below), whose sum is σ = 35634887252. Its totient is φ = 22990249800.

The previous prime is 28737812237. The next prime is 28737812287. The reversal of 28737812275 is 57221873782.

It is a de Polignac number, because none of the positive numbers 2^k-28737812275 is a prime.

It is a super-3 number, since 3×28737812275³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 574756221 + ... + 574756270.

Almost surely, 2^28737812275 is an apocalyptic number.

28737812275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28737812275 is a deficient number, since it is larger than the sum of its proper divisors (6897074977).

28737812275 is a wasteful number, since it uses less digits than its factorization.

28737812275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149512501 (or 1149512496 counting only the distinct ones).

The product of its digits is 2634240, while the sum is 52.

The spelling of 28737812275 in words is "twenty-eight billion, seven hundred thirty-seven million, eight hundred twelve thousand, two hundred seventy-five".