23154320240 has 40 divisors (see below), whose sum is σ = 53845334928. Its totient is φ = 9259742720.

The previous prime is 23154320183. The next prime is 23154320249. The reversal of 23154320240 is 4202345132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×23154320240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154320249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377999 + ... + 434961.

Almost surely, 2^23154320240 is an apocalyptic number.

23154320240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23154320240 is an abundant number, since it is smaller than the sum of its proper divisors (30691014688).

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

23154320240 is a wasteful number, since it uses less digits than its factorization.

23154320240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62057 (or 62051 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 23154320240 its reverse (4202345132), we get a palindrome (27356665372).

The spelling of 23154320240 in words is "twenty-three billion, one hundred fifty-four million, three hundred twenty thousand, two hundred forty".