23384621 has 4 divisors (see below), whose sum is σ = 25183452. Its totient is φ = 21585792.

The previous prime is 23384609. The next prime is 23384651. The reversal of 23384621 is 12648332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3759721 + 19624900 = 1939^2 + 4430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23384621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23384651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899396 + ... + 899421.

It is an arithmetic number, because the mean of its divisors is an integer number (6295863).

Almost surely, 2^23384621 is an apocalyptic number.

It is an amenable number.

23384621 is a deficient number, since it is larger than the sum of its proper divisors (1798831).

23384621 is a wasteful number, since it uses less digits than its factorization.

23384621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798830.

The product of its digits is 6912, while the sum is 29.

The square root of 23384621 is about 4835.7647792257. The cubic root of 23384621 is about 285.9631760176.

The spelling of 23384621 in words is "twenty-three million, three hundred eighty-four thousand, six hundred twenty-one".