28869497295431 has 12 divisors (see below), whose sum is σ = 32199272857752. Its totient is φ = 25729843733664.

The previous prime is 28869497295347. The next prime is 28869497295439. The reversal of 28869497295431 is 13459279496882.

It is not a de Polignac number, because 28869497295431 - 2²⁶ = 28869430186567 is a prime.

It is a super-2 number, since 2×28869497295431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28869497295439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1320280721 + ... + 1320302586.

It is an arithmetic number, because the mean of its divisors is an integer number (2683272738146).

Almost surely, 2^{28869497295431} is an apocalyptic number.

28869497295431 is a deficient number, since it is larger than the sum of its proper divisors (3329775562321).

28869497295431 is a wasteful number, since it uses less digits than its factorization.

28869497295431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640583378 (or 2640583349 counting only the distinct ones).

The product of its digits is 1881169920, while the sum is 77.

The spelling of 28869497295431 in words is "twenty-eight trillion, eight hundred sixty-nine billion, four hundred ninety-seven million, two hundred ninety-five thousand, four hundred thirty-one".