22051204 has 48 divisors (see below), whose sum is σ = 46626048. Its totient is φ = 8921088.

The previous prime is 22051177. The next prime is 22051207. The reversal of 22051204 is 40215022.

It is not an unprimeable number, because it can be changed into a prime (22051207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62292 + ... + 62644.

It is an arithmetic number, because the mean of its divisors is an integer number (971376).

Almost surely, 2^22051204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22051204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23313024).

22051204 is an abundant number, since it is smaller than the sum of its proper divisors (24574844).

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

22051204 is a wasteful number, since it uses less digits than its factorization.

22051204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 22051204 is about 4695.8709522303. The cubic root of 22051204 is about 280.4211519361.

Adding to 22051204 its reverse (40215022), we get a palindrome (62266226).

The spelling of 22051204 in words is "twenty-two million, fifty-one thousand, two hundred four".