22022372 has 6 divisors (see below), whose sum is σ = 38539158. Its totient is φ = 11011184.

The previous prime is 22022353. The next prime is 22022389. The reversal of 22022372 is 27322022.

It can be written as a sum of positive squares in only one way, i.e., 14092516 + 7929856 = 3754^2 + 2816^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752793 + ... + 2752800.

It is an arithmetic number, because the mean of its divisors is an integer number (6423193).

Almost surely, 2^22022372 is an apocalyptic number.

It is an amenable number.

22022372 is a deficient number, since it is larger than the sum of its proper divisors (16516786).

22022372 is a wasteful number, since it uses less digits than its factorization.

22022372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505597 (or 5505595 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22022372 is about 4692.8000170474. The cubic root of 22022372 is about 280.2988815304.

Adding to 22022372 its reverse (27322022), we get a palindrome (49344394).

The spelling of 22022372 in words is "twenty-two million, twenty-two thousand, three hundred seventy-two".