28137442357 has 32 divisors (see below), whose sum is σ = 30946924800. Its totient is φ = 25499916288.

The previous prime is 28137442337. The next prime is 28137442391. The reversal of 28137442357 is 75324473182.

It is a cyclic number.

It is not a de Polignac number, because 28137442357 - 2²⁷ = 28003224629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28137442327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7777413 + ... + 7781029.

It is an arithmetic number, because the mean of its divisors is an integer number (967091400).

Almost surely, 2^28137442357 is an apocalyptic number.

It is an amenable number.

28137442357 is a deficient number, since it is larger than the sum of its proper divisors (2809482443).

28137442357 is a wasteful number, since it uses less digits than its factorization.

28137442357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885.

The product of its digits is 1128960, while the sum is 46.

The spelling of 28137442357 in words is "twenty-eight billion, one hundred thirty-seven million, four hundred forty-two thousand, three hundred fifty-seven".