23122749 has 24 divisors (see below), whose sum is σ = 33994080. Its totient is φ = 13970112.

The previous prime is 23122733. The next prime is 23122769. The reversal of 23122749 is 94722132.

It is not a de Polignac number, because 23122749 - 2⁴ = 23122733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29527 + ... + 30299.

It is an arithmetic number, because the mean of its divisors is an integer number (1416420).

Almost surely, 2^23122749 is an apocalyptic number.

It is an amenable number.

23122749 is a deficient number, since it is larger than the sum of its proper divisors (10871331).

23122749 is a wasteful number, since it uses less digits than its factorization.

23122749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 848 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 23122749 is about 4808.6119618867. The cubic root of 23122749 is about 284.8917163275.

It can be divided in two parts, 23122 and 749, that added together give a triangular number (23871 = T₂₁₈).

The spelling of 23122749 in words is "twenty-three million, one hundred twenty-two thousand, seven hundred forty-nine".