23515680 has 48 divisors (see below), whose sum is σ = 74075904. Its totient is φ = 6270720.

The previous prime is 23515663. The next prime is 23515691. The reversal of 23515680 is 8651532.

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

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, 24016 + ... + 24975.

It is an arithmetic number, because the mean of its divisors is an integer number (1543248).

Almost surely, 2^23515680 is an apocalyptic number.

23515680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23515680 is an abundant number, since it is smaller than the sum of its proper divisors (50560224).

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

23515680 is a wasteful number, since it uses less digits than its factorization.

23515680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49009 (or 49001 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 23515680 is about 4849.2968562463. The cubic root of 23515680 is about 286.4964075218.

The spelling of 23515680 in words is "twenty-three million, five hundred fifteen thousand, six hundred eighty".