23361720 has 32 divisors (see below), whose sum is σ = 70085520. Its totient is φ = 6229760.

The previous prime is 23361713. The next prime is 23361727. The reversal of 23361720 is 2716332.

It is an interprime number because it is at equal distance from previous prime (23361713) and next prime (23361727).

It is a super-2 number, since 2×23361720² = 1091539922716800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23361727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97221 + ... + 97460.

Almost surely, 2^23361720 is an apocalyptic number.

23361720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23361720 is an abundant number, since it is smaller than the sum of its proper divisors (46723800).

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

23361720 is a wasteful number, since it uses less digits than its factorization.

23361720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194695 (or 194691 counting only the distinct ones).

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

The square root of 23361720 is about 4833.3963214286. The cubic root of 23361720 is about 285.8697958190.

The spelling of 23361720 in words is "twenty-three million, three hundred sixty-one thousand, seven hundred twenty".