28407531036 has 12 divisors (see below), whose sum is σ = 66284239112. Its totient is φ = 9469177008.

The previous prime is 28407531011. The next prime is 28407531037. The reversal of 28407531036 is 63013570482.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×28407531036² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28407530985 and 28407531003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28407531037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183647115 + ... + 1183647138.

Almost surely, 2^28407531036 is an apocalyptic number.

It is an amenable number.

28407531036 is an abundant number, since it is smaller than the sum of its proper divisors (37876708076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28407531036 is a wasteful number, since it uses less digits than its factorization.

28407531036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367294260 (or 2367294258 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 28407531036 in words is "twenty-eight billion, four hundred seven million, five hundred thirty-one thousand, thirty-six".