23681738 has 8 divisors (see below), whose sum is σ = 35563332. Its totient is φ = 11827296.

The previous prime is 23681729. The next prime is 23681747. The reversal of 23681738 is 83718632.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23681729) and next prime (23681747).

It can be written as a sum of positive squares in 2 ways, for example, as 18003049 + 5678689 = 4243^2 + 2383^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 4445 + ... + 8192.

Almost surely, 2^23681738 is an apocalyptic number.

23681738 is a deficient number, since it is larger than the sum of its proper divisors (11881594).

23681738 is a wasteful number, since it uses less digits than its factorization.

23681738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13576.

The product of its digits is 48384, while the sum is 38.

The square root of 23681738 is about 4866.3885993620. The cubic root of 23681738 is about 287.1691993593.

The spelling of 23681738 in words is "twenty-three million, six hundred eighty-one thousand, seven hundred thirty-eight".