22464381 has 4 divisors (see below), whose sum is σ = 29952512. Its totient is φ = 14976252.

The previous prime is 22464373. The next prime is 22464383. The reversal of 22464381 is 18346422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22464381 - 2³ = 22464373 is a prime.

It is a super-2 number, since 2×22464381² = 1009296827426322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22464383) 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, 3744061 + ... + 3744066.

It is an arithmetic number, because the mean of its divisors is an integer number (7488128).

Almost surely, 2^22464381 is an apocalyptic number.

It is an amenable number.

22464381 is a deficient number, since it is larger than the sum of its proper divisors (7488131).

22464381 is an equidigital number, since it uses as much as digits as its factorization.

22464381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7488130.

The product of its digits is 9216, while the sum is 30.

The square root of 22464381 is about 4739.6604308748. The cubic root of 22464381 is about 282.1617577071.

The spelling of 22464381 in words is "twenty-two million, four hundred sixty-four thousand, three hundred eighty-one".