23919641 has 4 divisors (see below), whose sum is σ = 24001572. Its totient is φ = 23837712.

The previous prime is 23919619. The next prime is 23919659. The reversal of 23919641 is 14691932.

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 20214016 + 3705625 = 4496^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 23919641 - 2¹⁰ = 23918617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23919661) 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, 40526 + ... + 41111.

It is an arithmetic number, because the mean of its divisors is an integer number (6000393).

Almost surely, 2^23919641 is an apocalyptic number.

It is an amenable number.

23919641 is a deficient number, since it is larger than the sum of its proper divisors (81931).

23919641 is an equidigital number, since it uses as much as digits as its factorization.

23919641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81930.

The product of its digits is 11664, while the sum is 35.

The square root of 23919641 is about 4890.7710026130. The cubic root of 23919641 is about 288.1276159295.

The spelling of 23919641 in words is "twenty-three million, nine hundred nineteen thousand, six hundred forty-one".