28424005831 has 16 divisors (see below), whose sum is σ = 32894848224. Its totient is φ = 24325576704.

The previous prime is 28424005829. The next prime is 28424005859. The reversal of 28424005831 is 13850042482.

It is a happy number.

It is not a de Polignac number, because 28424005831 - 2¹ = 28424005829 is a prime.

It is a super-2 number, since 2×28424005831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28424005861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945010 + ... + 974623.

It is an arithmetic number, because the mean of its divisors is an integer number (2055928014).

Almost surely, 2^28424005831 is an apocalyptic number.

28424005831 is a deficient number, since it is larger than the sum of its proper divisors (4470842393).

28424005831 is a wasteful number, since it uses less digits than its factorization.

28424005831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919730.

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 28424005831 in words is "twenty-eight billion, four hundred twenty-four million, five thousand, eight hundred thirty-one".