23037440 has 40 divisors (see below), whose sum is σ = 55242000. Its totient is φ = 9213952.

The previous prime is 23037437. The next prime is 23037503. The reversal of 23037440 is 4473032.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940 + ... + 7059.

It is an arithmetic number, because the mean of its divisors is an integer number (1381050).

Almost surely, 2^23037440 is an apocalyptic number.

23037440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23037440 is an abundant number, since it is smaller than the sum of its proper divisors (32204560).

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

23037440 is an frugal number, since it uses more digits than its factorization.

23037440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9022 (or 9006 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 23037440 is about 4799.7333259255. The cubic root of 23037440 is about 284.5409250257.

The spelling of 23037440 in words is "twenty-three million, thirty-seven thousand, four hundred forty".