22206004 has 6 divisors (see below), whose sum is σ = 38860514. Its totient is φ = 11103000.

The previous prime is 22205987. The next prime is 22206047. The reversal of 22206004 is 40060222.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 21904 = 4710^2 + 148^2 .

It is a super-2 number, since 2×22206004² = 986213227296032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775747 + ... + 2775754.

Almost surely, 2^22206004 is an apocalyptic number.

It is an amenable number.

22206004 is a deficient number, since it is larger than the sum of its proper divisors (16654510).

22206004 is a wasteful number, since it uses less digits than its factorization.

22206004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551505 (or 5551503 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 22206004 is about 4712.3246916994. The cubic root of 22206004 is about 281.0758102299.

Adding to 22206004 its reverse (40060222), we get a palindrome (62266226).

The spelling of 22206004 in words is "twenty-two million, two hundred six thousand, four".