23218435740 has 24 divisors (see below), whose sum is σ = 65011620240. Its totient is φ = 6191582848.

The previous prime is 23218435717. The next prime is 23218435759. The reversal of 23218435740 is 4753481232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193486905 + ... + 193487024.

It is an arithmetic number, because the mean of its divisors is an integer number (2708817510).

Almost surely, 2^23218435740 is an apocalyptic number.

23218435740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23218435740 is an abundant number, since it is smaller than the sum of its proper divisors (41793184500).

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

23218435740 is a wasteful number, since it uses less digits than its factorization.

23218435740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386973941 (or 386973939 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 23218435740 in words is "twenty-three billion, two hundred eighteen million, four hundred thirty-five thousand, seven hundred forty".