23679840 has 48 divisors (see below), whose sum is σ = 74593008. Its totient is φ = 6314496.

The previous prime is 23679829. The next prime is 23679841. The reversal of 23679840 is 4897632.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23679841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24187 + ... + 25146.

It is an arithmetic number, because the mean of its divisors is an integer number (1554021).

Almost surely, 2^23679840 is an apocalyptic number.

23679840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23679840 is an abundant number, since it is smaller than the sum of its proper divisors (50913168).

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

23679840 is a wasteful number, since it uses less digits than its factorization.

23679840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49351 (or 49343 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 23679840 is about 4866.1935843121. The cubic root of 23679840 is about 287.1615273196.

The spelling of 23679840 in words is "twenty-three million, six hundred seventy-nine thousand, eight hundred forty".