23364403240 has 16 divisors (see below), whose sum is σ = 52569907380. Its totient is φ = 9345761280.

The previous prime is 23364403217. The next prime is 23364403243. The reversal of 23364403240 is 4230446332.

It can be written as a sum of positive squares in 2 ways, for example, as 23348451204 + 15952036 = 152802^2 + 3994^2 .

It is a super-2 number, since 2×23364403240² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23364403243) 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, 292055001 + ... + 292055080.

Almost surely, 2^23364403240 is an apocalyptic number.

23364403240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23364403240 is an abundant number, since it is smaller than the sum of its proper divisors (29205504140).

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

23364403240 is a wasteful number, since it uses less digits than its factorization.

23364403240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584110092 (or 584110088 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 23364403240 its reverse (4230446332), we get a palindrome (27594849572).

The spelling of 23364403240 in words is "twenty-three billion, three hundred sixty-four million, four hundred three thousand, two hundred forty".