23441640 has 64 divisors (see below), whose sum is σ = 74468160. Its totient is φ = 5882880.

The previous prime is 23441617. The next prime is 23441641. The reversal of 23441640 is 4614432.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23441640.

It is not an unprimeable number, because it can be changed into a prime (23441641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3706 + ... + 7785.

It is an arithmetic number, because the mean of its divisors is an integer number (1163565).

Almost surely, 2^23441640 is an apocalyptic number.

23441640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23441640 is an abundant number, since it is smaller than the sum of its proper divisors (51026520).

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

23441640 is a wasteful number, since it uses less digits than its factorization.

23441640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11522 (or 11518 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 23441640 is about 4841.6567412405. The cubic root of 23441640 is about 286.1954098399.

The spelling of 23441640 in words is "twenty-three million, four hundred forty-one thousand, six hundred forty".