23566732728 has 64 divisors (see below), whose sum is σ = 73454757120. Its totient is φ = 6121228800.

The previous prime is 23566732727. The next prime is 23566732733. The reversal of 23566732728 is 82723766532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23566732727) 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, 6374433 + ... + 6378128.

It is an arithmetic number, because the mean of its divisors is an integer number (1147730580).

Almost surely, 2^23566732728 is an apocalyptic number.

23566732728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23566732728 is an abundant number, since it is smaller than the sum of its proper divisors (49888024392).

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

23566732728 is a wasteful number, since it uses less digits than its factorization.

23566732728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12752588 (or 12752584 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 51.

The spelling of 23566732728 in words is "twenty-three billion, five hundred sixty-six million, seven hundred thirty-two thousand, seven hundred twenty-eight".