23720880 has 40 divisors (see below), whose sum is σ = 73535472. Its totient is φ = 6325504.

The previous prime is 23720861. The next prime is 23720909. The reversal of 23720880 is 8802732.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 49179 + ... + 49658.

Almost surely, 2^23720880 is an apocalyptic number.

23720880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23720880 is an abundant number, since it is smaller than the sum of its proper divisors (49814592).

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

23720880 is a wasteful number, since it uses less digits than its factorization.

23720880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98853 (or 98847 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 23720880 is about 4870.4086070883. The cubic root of 23720880 is about 287.3273266844.

The spelling of 23720880 in words is "twenty-three million, seven hundred twenty thousand, eight hundred eighty".