23203902420 has 72 divisors (see below), whose sum is σ = 70494986016. Its totient is φ = 6178053312.

The previous prime is 23203902419. The next prime is 23203902427. The reversal of 23203902420 is 2420930232.

23203902420 is a `hidden beast` number, since 2 + 32 + 0 + 390 + 242 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203902427) 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, 15499 + ... + 215981.

It is an arithmetic number, because the mean of its divisors is an integer number (979097028).

Almost surely, 2^23203902420 is an apocalyptic number.

23203902420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23203902420 is an abundant number, since it is smaller than the sum of its proper divisors (47291083596).

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

23203902420 is a wasteful number, since it uses less digits than its factorization.

23203902420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201141 (or 201136 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The spelling of 23203902420 in words is "twenty-three billion, two hundred three million, nine hundred two thousand, four hundred twenty".