23542740 has 72 divisors (see below), whose sum is σ = 76913928. Its totient is φ = 5794560.

The previous prime is 23542721. The next prime is 23542763. The reversal of 23542740 is 4724532.

23542740 is a `hidden beast` number, since 235 + 427 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 617796 + 22924944 = 786^2 + 4788^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2691 + ... + 7370.

It is an arithmetic number, because the mean of its divisors is an integer number (1068249).

Almost surely, 2^23542740 is an apocalyptic number.

23542740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23542740 is an abundant number, since it is smaller than the sum of its proper divisors (53371188).

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

23542740 is a wasteful number, since it uses less digits than its factorization.

23542740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10089 (or 10084 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 23542740 is about 4852.0861492764. The cubic root of 23542740 is about 286.6062579279.

The spelling of 23542740 in words is "twenty-three million, five hundred forty-two thousand, seven hundred forty".