22220454 has 16 divisors (see below), whose sum is σ = 44494848. Its totient is φ = 7397832.

The previous prime is 22220453. The next prime is 22220489. The reversal of 22220454 is 45402222.

It is a super-2 number, since 2×22220454² = 987497151932232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22220454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (2780928).

Almost surely, 2^22220454 is an apocalyptic number.

22220454 is an abundant number, since it is smaller than the sum of its proper divisors (22274394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22220454 is a wasteful number, since it uses less digits than its factorization.

22220454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4499.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22220454 is about 4713.8576558908. The cubic root of 22220454 is about 281.1367646876.

Adding to 22220454 its reverse (45402222), we get a palindrome (67622676).

The spelling of 22220454 in words is "twenty-two million, two hundred twenty thousand, four hundred fifty-four".