23082640 has 80 divisors (see below), whose sum is σ = 62710272. Its totient is φ = 7736832.

The previous prime is 23082599. The next prime is 23082643. The reversal of 23082640 is 4628032.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (23082643) 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, 25882 + ... + 26758.

Almost surely, 2^23082640 is an apocalyptic number.

23082640 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 23082640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31355136).

23082640 is an abundant number, since it is smaller than the sum of its proper divisors (39627632).

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

23082640 is a wasteful number, since it uses less digits than its factorization.

23082640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 23082640 is about 4804.4396135241. The cubic root of 23082640 is about 284.7268954520.

Subtracting from 23082640 its sum of digits (25), we obtain a triangular number (23082615 = T₆₇₉₄).

The spelling of 23082640 in words is "twenty-three million, eighty-two thousand, six hundred forty".