23747421 has 8 divisors (see below), whose sum is σ = 31764384. Its totient is φ = 15781040.

The previous prime is 23747407. The next prime is 23747429. The reversal of 23747421 is 12474732.

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

It is a cyclic number.

It is not a de Polignac number, because 23747421 - 2⁵ = 23747389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23747429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11535 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (3970548).

Almost surely, 2^23747421 is an apocalyptic number.

It is an amenable number.

23747421 is a deficient number, since it is larger than the sum of its proper divisors (8016963).

23747421 is a wasteful number, since it uses less digits than its factorization.

23747421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25291.

The product of its digits is 9408, while the sum is 30.

The square root of 23747421 is about 4873.1325654039. The cubic root of 23747421 is about 287.4344490755.

The spelling of 23747421 in words is "twenty-three million, seven hundred forty-seven thousand, four hundred twenty-one".