24394621 has 4 divisors (see below), whose sum is σ = 24521212. Its totient is φ = 24268032.

The previous prime is 24394603. The next prime is 24394649. The reversal of 24394621 is 12649342.

It is a happy number.

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 5784025 + 18610596 = 2405^2 + 4314^2 .

It is a cyclic number.

It is not a de Polignac number, because 24394621 - 2⁵ = 24394589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24394661) 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, 63006 + ... + 63391.

It is an arithmetic number, because the mean of its divisors is an integer number (6130303).

Almost surely, 2^24394621 is an apocalyptic number.

It is an amenable number.

24394621 is a deficient number, since it is larger than the sum of its proper divisors (126591).

24394621 is a wasteful number, since it uses less digits than its factorization.

24394621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126590.

The product of its digits is 10368, while the sum is 31.

The square root of 24394621 is about 4939.0911107207. The cubic root of 24394621 is about 290.0222773215.

It can be divided in two parts, 243 and 94621, that added together give a square (94864 = 308²).

The spelling of 24394621 in words is "twenty-four million, three hundred ninety-four thousand, six hundred twenty-one".