23723642 has 8 divisors (see below), whose sum is σ = 35812596. Its totient is φ = 11786112.

The previous prime is 23723639. The next prime is 23723683. The reversal of 23723642 is 24632732.

It can be written as a sum of positive squares in 2 ways, for example, as 23049601 + 674041 = 4801^2 + 821^2 .

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

It is a super-2 number, since 2×23723642² = 1125622379488328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37463 + ... + 38090.

Almost surely, 2^23723642 is an apocalyptic number.

23723642 is a deficient number, since it is larger than the sum of its proper divisors (12088954).

23723642 is a wasteful number, since it uses less digits than its factorization.

23723642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75712.

The product of its digits is 12096, while the sum is 29.

The square root of 23723642 is about 4870.6921479396. The cubic root of 23723642 is about 287.3384781437.

The spelling of 23723642 in words is "twenty-three million, seven hundred twenty-three thousand, six hundred forty-two".