23874749 has 4 divisors (see below), whose sum is σ = 25279164. Its totient is φ = 22470336.

The previous prime is 23874727. The next prime is 23874757. The reversal of 23874749 is 94747832.

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 12652249 + 11222500 = 3557^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 23874749 - 2⁸ = 23874493 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23874049) 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, 702182 + ... + 702215.

It is an arithmetic number, because the mean of its divisors is an integer number (6319791).

Almost surely, 2^23874749 is an apocalyptic number.

It is an amenable number.

23874749 is a deficient number, since it is larger than the sum of its proper divisors (1404415).

23874749 is a wasteful number, since it uses less digits than its factorization.

23874749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404414.

The product of its digits is 338688, while the sum is 44.

The square root of 23874749 is about 4886.1793868011. The cubic root of 23874749 is about 287.9472519459.

The spelling of 23874749 in words is "twenty-three million, eight hundred seventy-four thousand, seven hundred forty-nine".