23615420928 has 240 divisors, whose sum is σ = 70319645088. Its totient is φ = 7035494400.

The previous prime is 23615420863. The next prime is 23615421013. The reversal of 23615420928 is 82902451632.

It is a self number, because there is not a number n which added to its sum of digits gives 23615420928.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11336175 + ... + 11338257.

Almost surely, 2^23615420928 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 23615420928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35159822544).

23615420928 is an abundant number, since it is smaller than the sum of its proper divisors (46704224160).

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

23615420928 is a wasteful number, since it uses less digits than its factorization.

23615420928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2160 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 23615420928 in words is "twenty-three billion, six hundred fifteen million, four hundred twenty thousand, nine hundred twenty-eight".