23003749 has 16 divisors (see below), whose sum is σ = 24820992. Its totient is φ = 21269248.

The previous prime is 23003719. The next prime is 23003759. The reversal of 23003749 is 94730032.

It is a cyclic number.

It is not a de Polignac number, because 23003749 - 2¹¹ = 23001701 is a prime.

It is a super-4 number, since 4×23003749⁴ (a number of 31 digits) contains 4444 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 (23003719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137664 + ... + 137830.

It is an arithmetic number, because the mean of its divisors is an integer number (1551312).

Almost surely, 2^23003749 is an apocalyptic number.

It is an amenable number.

23003749 is a deficient number, since it is larger than the sum of its proper divisors (1817243).

23003749 is a wasteful number, since it uses less digits than its factorization.

23003749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 23003749 is about 4796.2223676556. Note that the first 3 decimals coincide. The cubic root of 23003749 is about 284.4021488229.

The spelling of 23003749 in words is "twenty-three million, three thousand, seven hundred forty-nine".