23991694 has 4 divisors (see below), whose sum is σ = 35987544. Its totient is φ = 11995846.

The previous prime is 23991677. The next prime is 23991713. The reversal of 23991694 is 49619932.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23991694.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5997922 + ... + 5997925.

It is an arithmetic number, because the mean of its divisors is an integer number (8996886).

Almost surely, 2^23991694 is an apocalyptic number.

23991694 is a deficient number, since it is larger than the sum of its proper divisors (11995850).

23991694 is a wasteful number, since it uses less digits than its factorization.

23991694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11995849.

The product of its digits is 104976, while the sum is 43.

The square root of 23991694 is about 4898.1316846324. The cubic root of 23991694 is about 288.4166343194.

The spelling of 23991694 in words is "twenty-three million, nine hundred ninety-one thousand, six hundred ninety-four".