22487333428 has 18 divisors (see below), whose sum is σ = 45777786306. Its totient is φ = 9637428528.

The previous prime is 22487333413. The next prime is 22487333459. The reversal of 22487333428 is 82433378422.

It can be written as a sum of positive squares in only one way, i.e., 22431651984 + 55681444 = 149772^2 + 7462^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57365451 + ... + 57365842.

Almost surely, 2^22487333428 is an apocalyptic number.

22487333428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22487333428 is an abundant number, since it is smaller than the sum of its proper divisors (23290452878).

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

22487333428 is a wasteful number, since it uses less digits than its factorization.

22487333428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114731311 (or 114731302 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 46.

The spelling of 22487333428 in words is "twenty-two billion, four hundred eighty-seven million, three hundred thirty-three thousand, four hundred twenty-eight".