23749973 has 8 divisors (see below), whose sum is σ = 25615800. Its totient is φ = 21889728.

The previous prime is 23749963. The next prime is 23749987. The reversal of 23749973 is 37994732.

It can be written as a sum of positive squares in 4 ways, for example, as 3844 + 23746129 = 62^2 + 4873^2 .

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 23749973 - 2²⁰ = 22701397 is a prime.

It is a super-2 number, since 2×23749973² = 1128122435001458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23749903) 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 7 ways as a sum of consecutive naturals, for example, 13043 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (3201975).

Almost surely, 2^23749973 is an apocalyptic number.

It is an amenable number.

23749973 is a deficient number, since it is larger than the sum of its proper divisors (1865827).

23749973 is a wasteful number, since it uses less digits than its factorization.

23749973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791.

The product of its digits is 285768, while the sum is 44.

The square root of 23749973 is about 4873.3944022621. The cubic root of 23749973 is about 287.4447450207. Note that the first 3 decimals are identical.

The spelling of 23749973 in words is "twenty-three million, seven hundred forty-nine thousand, nine hundred seventy-three".