22051408 has 30 divisors (see below), whose sum is σ = 44107854. Its totient is φ = 10672128.

The previous prime is 22051369. The next prime is 22051417. The reversal of 22051408 is 80415022.

It can be written as a sum of positive squares in 3 ways, for example, as 2585664 + 19465744 = 1608^2 + 4412^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114160 + ... + 114352.

Almost surely, 2^22051408 is an apocalyptic number.

It is an amenable number.

22051408 is an abundant number, since it is smaller than the sum of its proper divisors (22056446).

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

22051408 is an equidigital number, since it uses as much as digits as its factorization.

22051408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 22051408 is about 4695.8926733902. The cubic root of 22051408 is about 280.4220166771.

The spelling of 22051408 in words is "twenty-two million, fifty-one thousand, four hundred eight".