23974649 has 4 divisors (see below), whose sum is σ = 23988900. Its totient is φ = 23960400.

The previous prime is 23974597. The next prime is 23974667. The reversal of 23974649 is 94647932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14115049 + 9859600 = 3757^2 + 3140^2 .

It is a cyclic number.

It is not a de Polignac number, because 23974649 - 2¹² = 23970553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23974949) 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, 4202 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (5997225).

Almost surely, 2^23974649 is an apocalyptic number.

It is an amenable number.

23974649 is a deficient number, since it is larger than the sum of its proper divisors (14251).

23974649 is a wasteful number, since it uses less digits than its factorization.

23974649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14250.

The product of its digits is 326592, while the sum is 44.

The square root of 23974649 is about 4896.3914263465. The cubic root of 23974649 is about 288.3483158671.

The spelling of 23974649 in words is "twenty-three million, nine hundred seventy-four thousand, six hundred forty-nine".