28332500031 has 40 divisors (see below), whose sum is σ = 46347421824. Its totient is φ = 17105780880.

The previous prime is 28332499981. The next prime is 28332500059. The reversal of 28332500031 is 13000523382.

It is not a de Polignac number, because 28332500031 - 2⁶ = 28332499967 is a prime.

It is a super-2 number, since 2×28332500031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28332499968 and 28332500004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28332500071) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 173880 + ... + 294786.

Almost surely, 2^28332500031 is an apocalyptic number.

28332500031 is a deficient number, since it is larger than the sum of its proper divisors (18014921793).

28332500031 is a wasteful number, since it uses less digits than its factorization.

28332500031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121193 (or 121184 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The spelling of 28332500031 in words is "twenty-eight billion, three hundred thirty-two million, five hundred thousand, thirty-one".