23405208072 has 96 divisors (see below), whose sum is σ = 60799000320. Its totient is φ = 7500487680.

The previous prime is 23405208049. The next prime is 23405208077. The reversal of 23405208072 is 27080250432.

It is a super-2 number, since 2×23405208072² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23405208077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69451488 + ... + 69451824.

It is an arithmetic number, because the mean of its divisors is an integer number (633322920).

Almost surely, 2^23405208072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23405208072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30399500160).

23405208072 is an abundant number, since it is smaller than the sum of its proper divisors (37393792248).

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

23405208072 is a wasteful number, since it uses less digits than its factorization.

23405208072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The spelling of 23405208072 in words is "twenty-three billion, four hundred five million, two hundred eight thousand, seventy-two".