23967220 has 12 divisors (see below), whose sum is σ = 50331204. Its totient is φ = 9586880.

The previous prime is 23967197. The next prime is 23967221. The reversal of 23967220 is 2276932.

It can be written as a sum of positive squares in 2 ways, for example, as 10732176 + 13235044 = 3276^2 + 3638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23967221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599161 + ... + 599200.

It is an arithmetic number, because the mean of its divisors is an integer number (4194267).

Almost surely, 2^23967220 is an apocalyptic number.

23967220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23967220 is an abundant number, since it is smaller than the sum of its proper divisors (26363984).

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

23967220 is a wasteful number, since it uses less digits than its factorization.

23967220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198370 (or 1198368 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 23967220 is about 4895.6327476640. The cubic root of 23967220 is about 288.3185293909.

The spelling of 23967220 in words is "twenty-three million, nine hundred sixty-seven thousand, two hundred twenty".