28131408374 has 16 divisors (see below), whose sum is σ = 42468487920. Its totient is φ = 13975378080.

The previous prime is 28131408367. The next prime is 28131408377. The reversal of 28131408374 is 47380413182.

It is a super-2 number, since 2×28131408374² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131408377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401864 + ... + 466644.

It is an arithmetic number, because the mean of its divisors is an integer number (2654280495).

Almost surely, 2^28131408374 is an apocalyptic number.

28131408374 is a deficient number, since it is larger than the sum of its proper divisors (14337079546).

28131408374 is a wasteful number, since it uses less digits than its factorization.

28131408374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66175.

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 28131408374 in words is "twenty-eight billion, one hundred thirty-one million, four hundred eight thousand, three hundred seventy-four".