23457984240 has 80 divisors (see below), whose sum is σ = 72771913728. Its totient is φ = 6250975488.

The previous prime is 23457984197. The next prime is 23457984247. The reversal of 23457984240 is 4248975432.

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 (48).

It is a self number, because there is not a number n which added to its sum of digits gives 23457984240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23457984247) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 307177 + ... + 375863.

Almost surely, 2^23457984240 is an apocalyptic number.

23457984240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23457984240 is an abundant number, since it is smaller than the sum of its proper divisors (49313929488).

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

23457984240 is a wasteful number, since it uses less digits than its factorization.

23457984240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70126 (or 70120 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 23457984240 in words is "twenty-three billion, four hundred fifty-seven million, nine hundred eighty-four thousand, two hundred forty".