23246640 has 120 divisors (see below), whose sum is σ = 79213680. Its totient is φ = 6108672.

The previous prime is 23246627. The next prime is 23246647. The reversal of 23246640 is 4664232.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (23246647) 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, 59566 + ... + 59954.

It is an arithmetic number, because the mean of its divisors is an integer number (660114).

Almost surely, 2^23246640 is an apocalyptic number.

23246640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23246640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39606840).

23246640 is an abundant number, since it is smaller than the sum of its proper divisors (55967040).

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

23246640 is a wasteful number, since it uses less digits than its factorization.

23246640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 23246640 is about 4821.4769521382. The cubic root of 23246640 is about 285.3996240616.

The spelling of 23246640 in words is "twenty-three million, two hundred forty-six thousand, six hundred forty".