23729438 has 16 divisors (see below), whose sum is σ = 36067680. Its totient is φ = 11708256.

The previous prime is 23729417. The next prime is 23729441. The reversal of 23729438 is 83492732.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90095 + ... + 90357.

It is an arithmetic number, because the mean of its divisors is an integer number (2254230).

Almost surely, 2^23729438 is an apocalyptic number.

23729438 is a deficient number, since it is larger than the sum of its proper divisors (12338242).

23729438 is a wasteful number, since it uses less digits than its factorization.

23729438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 72576, while the sum is 38.

The square root of 23729438 is about 4871.2870989093. The cubic root of 23729438 is about 287.3618764371.

The spelling of 23729438 in words is "twenty-three million, seven hundred twenty-nine thousand, four hundred thirty-eight".