23261244240 has 80 divisors (see below), whose sum is σ = 77656779648. Its totient is φ = 5725843968.

The previous prime is 23261244239. The next prime is 23261244341. The reversal of 23261244240 is 4244216232.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23261244198 and 23261244207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3724644 + ... + 3730883.

Almost surely, 2^23261244240 is an apocalyptic number.

23261244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23261244240 is an abundant number, since it is smaller than the sum of its proper divisors (54395535408).

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

23261244240 is a wasteful number, since it uses less digits than its factorization.

23261244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7455556 (or 7455550 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 23261244240 in words is "twenty-three billion, two hundred sixty-one million, two hundred forty-four thousand, two hundred forty".