23340840 has 32 divisors (see below), whose sum is σ = 70022880. Its totient is φ = 6224192.

The previous prime is 23340839. The next prime is 23340859. The reversal of 23340840 is 4804332.

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 23340840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97134 + ... + 97373.

It is an arithmetic number, because the mean of its divisors is an integer number (2188215).

Almost surely, 2^23340840 is an apocalyptic number.

23340840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23340840 is an abundant number, since it is smaller than the sum of its proper divisors (46682040).

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

23340840 is a wasteful number, since it uses less digits than its factorization.

23340840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194521 (or 194517 counting only the distinct ones).

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

The square root of 23340840 is about 4831.2358667322. The cubic root of 23340840 is about 285.7846031689.

The spelling of 23340840 in words is "twenty-three million, three hundred forty thousand, eight hundred forty".