22150254 has 64 divisors (see below), whose sum is σ = 52992000. Its totient is φ = 6166944.

The previous prime is 22150243. The next prime is 22150273. The reversal of 22150254 is 45205122.

It is a happy number.

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 22150254.

It is a congruent number.

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, 96612 + ... + 96840.

It is an arithmetic number, because the mean of its divisors is an integer number (828000).

Almost surely, 2^22150254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22150254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26496000).

22150254 is an abundant number, since it is smaller than the sum of its proper divisors (30841746).

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

22150254 is a wasteful number, since it uses less digits than its factorization.

22150254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22150254 is about 4706.4056348768. The cubic root of 22150254 is about 280.8403917918.

Adding to 22150254 its reverse (45205122), we get a palindrome (67355376).

The spelling of 22150254 in words is "twenty-two million, one hundred fifty thousand, two hundred fifty-four".