23877640 has 16 divisors (see below), whose sum is σ = 53724780. Its totient is φ = 9551040.

The previous prime is 23877631. The next prime is 23877641. The reversal of 23877640 is 4677832.

It can be written as a sum of positive squares in 2 ways, for example, as 22335076 + 1542564 = 4726^2 + 1242^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23877640.

It is not an unprimeable number, because it can be changed into a prime (23877641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298431 + ... + 298510.

Almost surely, 2^23877640 is an apocalyptic number.

23877640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23877640 is an abundant number, since it is smaller than the sum of its proper divisors (29847140).

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

23877640 is a wasteful number, since it uses less digits than its factorization.

23877640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596952 (or 596948 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 23877640 is about 4886.4752122568. The cubic root of 23877640 is about 287.9588740144.

The spelling of 23877640 in words is "twenty-three million, eight hundred seventy-seven thousand, six hundred forty".