23994387 has 30 divisors (see below), whose sum is σ = 37124252. Its totient is φ = 15436008.

The previous prime is 23994371. The next prime is 23994401. The reversal of 23994387 is 78349932.

It is a happy number.

It is not a de Polignac number, because 23994387 - 2⁴ = 23994371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23994337) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 289048 + ... + 289130.

Almost surely, 2^23994387 is an apocalyptic number.

23994387 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

23994387 is a deficient number, since it is larger than the sum of its proper divisors (13129865).

23994387 is an frugal number, since it uses more digits than its factorization.

23994387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 129 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 23994387 is about 4898.4065776536. The cubic root of 23994387 is about 288.4274252336.

It can be divided in two parts, 2399 and 4387, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 23994387 in words is "twenty-three million, nine hundred ninety-four thousand, three hundred eighty-seven".