22434481 has 4 divisors (see below), whose sum is σ = 22769392. Its totient is φ = 22099572.

The previous prime is 22434479. The next prime is 22434491. The reversal of 22434481 is 18443422.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18443422 = 2 ⋅9221711.

It is a cyclic number.

It is not a de Polignac number, because 22434481 - 2¹ = 22434479 is a prime.

It is a super-2 number, since 2×22434481² = 1006611875478722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22434431) 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, 167355 + ... + 167488.

It is an arithmetic number, because the mean of its divisors is an integer number (5692348).

Almost surely, 2^22434481 is an apocalyptic number.

It is an amenable number.

22434481 is a deficient number, since it is larger than the sum of its proper divisors (334911).

22434481 is an equidigital number, since it uses as much as digits as its factorization.

22434481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334910.

The product of its digits is 6144, while the sum is 28.

The square root of 22434481 is about 4736.5051462022. The cubic root of 22434481 is about 282.0365167406.

It can be divided in two parts, 2243 and 4481, that added together give a square (6724 = 82²).

The spelling of 22434481 in words is "twenty-two million, four hundred thirty-four thousand, four hundred eighty-one".