23774021 has 8 divisors (see below), whose sum is σ = 24207960. Its totient is φ = 23344128.

The previous prime is 23773949. The next prime is 23774027. The reversal of 23774021 is 12047732.

It can be written as a sum of positive squares in 4 ways, for example, as 9523396 + 14250625 = 3086^2 + 3775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23774021 - 2¹⁸ = 23511877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23774027) 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, 12395 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (3025995).

Almost surely, 2^23774021 is an apocalyptic number.

It is an amenable number.

23774021 is a deficient number, since it is larger than the sum of its proper divisors (433939).

23774021 is a wasteful number, since it uses less digits than its factorization.

23774021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 23774021 is about 4875.8610521630. The cubic root of 23774021 is about 287.5417295446.

The spelling of 23774021 in words is "twenty-three million, seven hundred seventy-four thousand, twenty-one".