22440454 has 4 divisors (see below), whose sum is σ = 33660684. Its totient is φ = 11220226.

The previous prime is 22440449. The next prime is 22440487. The reversal of 22440454 is 45404422.

It is a happy number.

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

It is a super-2 number, since 2×22440454² = 1007147951452232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610112 + ... + 5610115.

It is an arithmetic number, because the mean of its divisors is an integer number (8415171).

Almost surely, 2^22440454 is an apocalyptic number.

22440454 is a deficient number, since it is larger than the sum of its proper divisors (11220230).

22440454 is a wasteful number, since it uses less digits than its factorization.

22440454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11220229.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 22440454 is about 4737.1356324260. The cubic root of 22440454 is about 282.0615445038.

Adding to 22440454 its reverse (45404422), we get a palindrome (67844876).

The spelling of 22440454 in words is "twenty-two million, four hundred forty thousand, four hundred fifty-four".