23460840 has 160 divisors (see below), whose sum is σ = 85072680. Its totient is φ = 5764608.

The previous prime is 23460823. The next prime is 23460841. The reversal of 23460840 is 4806432.

It can be written as a sum of positive squares in 4 ways, for example, as 9036036 + 14424804 = 3006^2 + 3798^2 .

It is a super-2 number, since 2×23460840² = 1100822027011200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23460841) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 41842 + ... + 42398.

Almost surely, 2^23460840 is an apocalyptic number.

23460840 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 23460840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42536340).

23460840 is an abundant number, since it is smaller than the sum of its proper divisors (61611840).

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

23460840 is a wasteful number, since it uses less digits than its factorization.

23460840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 23460840 is about 4843.6391277633. The cubic root of 23460840 is about 286.2735251414.

The spelling of 23460840 in words is "twenty-three million, four hundred sixty thousand, eight hundred forty".