23720361 has 12 divisors (see below), whose sum is σ = 36790992. Its totient is φ = 13554408.

The previous prime is 23720299. The next prime is 23720371. The reversal of 23720361 is 16302732.

It is not a de Polignac number, because 23720361 - 2⁶ = 23720297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23720371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80535 + ... + 80828.

It is an arithmetic number, because the mean of its divisors is an integer number (3065916).

Almost surely, 2^23720361 is an apocalyptic number.

23720361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23720361 is a deficient number, since it is larger than the sum of its proper divisors (13070631).

23720361 is a wasteful number, since it uses less digits than its factorization.

23720361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161380 (or 161373 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 23720361 is about 4870.3553258464. The cubic root of 23720361 is about 287.3252311471.

The spelling of 23720361 in words is "twenty-three million, seven hundred twenty thousand, three hundred sixty-one".