22030554 has 64 divisors (see below), whose sum is σ = 54786816. Its totient is φ = 5750784.

The previous prime is 22030531. The next prime is 22030579. The reversal of 22030554 is 45503022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 22030554.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85594 + ... + 85850.

It is an arithmetic number, because the mean of its divisors is an integer number (856044).

Almost surely, 2^22030554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22030554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27393408).

22030554 is an abundant number, since it is smaller than the sum of its proper divisors (32756262).

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

22030554 is a wasteful number, since it uses less digits than its factorization.

22030554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22030554 is about 4693.6716970832. The cubic root of 22030554 is about 280.3335904995. Note that the first 3 decimals are identical.

Adding to 22030554 its reverse (45503022), we get a palindrome (67533576).

The spelling of 22030554 in words is "twenty-two million, thirty thousand, five hundred fifty-four".