23687120 has 40 divisors (see below), whose sum is σ = 58315464. Its totient is φ = 8916992.

The previous prime is 23687119. The next prime is 23687149. The reversal of 23687120 is 2178632.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10784656 + 12902464 = 3284^2 + 3592^2 .

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

It is a super-2 number, since 2×23687120² = 1122159307788800, which contains 22 as substring.

It is a congruent number.

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, 7349 + ... + 10068.

Almost surely, 2^23687120 is an apocalyptic number.

23687120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23687120 is an abundant number, since it is smaller than the sum of its proper divisors (34628344).

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

23687120 is a wasteful number, since it uses less digits than its factorization.

23687120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17447 (or 17441 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 23687120 is about 4866.9415447486. The cubic root of 23687120 is about 287.1909520922.

The spelling of 23687120 in words is "twenty-three million, six hundred eighty-seven thousand, one hundred twenty".