23915909420 has 96 divisors (see below), whose sum is σ = 55420411200. Its totient is φ = 8613319680.

The previous prime is 23915909411. The next prime is 23915909461. The reversal of 23915909420 is 2490951932.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15438806 + ... + 15440354.

It is an arithmetic number, because the mean of its divisors is an integer number (577295950).

Almost surely, 2^23915909420 is an apocalyptic number.

23915909420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23915909420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27710205600).

23915909420 is an abundant number, since it is smaller than the sum of its proper divisors (31504501780).

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

23915909420 is a wasteful number, since it uses less digits than its factorization.

23915909420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2995 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 23915909420 in words is "twenty-three billion, nine hundred fifteen million, nine hundred nine thousand, four hundred twenty".