423639008728 has 32 divisors (see below), whose sum is σ = 892617314400. Its totient is φ = 187024578048.

The previous prime is 423639008711. The next prime is 423639008759. The reversal of 423639008728 is 827800936324.

It is a super-3 number, since 3×423639008728³ (a number of 36 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88550913 + ... + 88555696.

It is an arithmetic number, because the mean of its divisors is an integer number (27894291075).

Almost surely, 2^423639008728 is an apocalyptic number.

It is an amenable number.

423639008728 is an abundant number, since it is smaller than the sum of its proper divisors (468978305672).

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

423639008728 is a wasteful number, since it uses less digits than its factorization.

423639008728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177106651 (or 177106647 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 423639008728 in words is "four hundred twenty-three billion, six hundred thirty-nine million, eight thousand, seven hundred twenty-eight".