22190722 has 8 divisors (see below), whose sum is σ = 34733376. Its totient is φ = 10612932.

The previous prime is 22190683. The next prime is 22190737. The reversal of 22190722 is 22709122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241158 + ... + 241249.

It is an arithmetic number, because the mean of its divisors is an integer number (4341672).

Almost surely, 2^22190722 is an apocalyptic number.

22190722 is a deficient number, since it is larger than the sum of its proper divisors (12542654).

22190722 is a wasteful number, since it uses less digits than its factorization.

22190722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482432.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 22190722 is about 4710.7029199473. The cubic root of 22190722 is about 281.0113173678.

Adding to 22190722 its reverse (22709122), we get a palindrome (44899844).

Subtracting 22190722 from its reverse (22709122), we obtain a square (518400 = 720²).

The spelling of 22190722 in words is "twenty-two million, one hundred ninety thousand, seven hundred twenty-two".