23242739 has 12 divisors (see below), whose sum is σ = 25486776. Its totient is φ = 21183552.

The previous prime is 23242733. The next prime is 23242741. The reversal of 23242739 is 93724232.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-23242739 is a prime.

It is a Duffinian number.

23242739 is a modest number, since divided by 2739 gives 2324 as remainder.

It is not an unprimeable number, because it can be changed into a prime (23242733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13199 + ... + 14855.

It is an arithmetic number, because the mean of its divisors is an integer number (2123898).

Almost surely, 2^23242739 is an apocalyptic number.

23242739 is a deficient number, since it is larger than the sum of its proper divisors (2244037).

23242739 is a wasteful number, since it uses less digits than its factorization.

23242739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1753 counting only the distinct ones).

The product of its digits is 18144, while the sum is 32.

The square root of 23242739 is about 4821.0723910765. The cubic root of 23242739 is about 285.3836589412.

The spelling of 23242739 in words is "twenty-three million, two hundred forty-two thousand, seven hundred thirty-nine".