23572640 has 96 divisors (see below), whose sum is σ = 68584320. Its totient is φ = 7455744.

The previous prime is 23572609. The next prime is 23572687. The reversal of 23572640 is 4627532.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13751 + ... + 15369.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^23572640 is an apocalyptic number.

23572640 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 23572640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34292160).

23572640 is an abundant number, since it is smaller than the sum of its proper divisors (45011680).

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

23572640 is a wasteful number, since it uses less digits than its factorization.

23572640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654 (or 1646 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 23572640 is about 4855.1663205291. The cubic root of 23572640 is about 286.7275395037.

The spelling of 23572640 in words is "twenty-three million, five hundred seventy-two thousand, six hundred forty".