22072304 has 10 divisors (see below), whose sum is σ = 42765120. Its totient is φ = 11036144.

The previous prime is 22072289. The next prime is 22072331. The reversal of 22072304 is 40327022.

It is a happy number.

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, 689744 + ... + 689775.

It is an arithmetic number, because the mean of its divisors is an integer number (4276512).

Almost surely, 2^22072304 is an apocalyptic number.

It is an amenable number.

22072304 is a deficient number, since it is larger than the sum of its proper divisors (20692816).

22072304 is a wasteful number, since it uses less digits than its factorization.

22072304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379527 (or 1379521 counting only the distinct ones).

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

The square root of 22072304 is about 4698.1170696355. The cubic root of 22072304 is about 280.5105650447.

Adding to 22072304 its reverse (40327022), we get a palindrome (62399326).

The spelling of 22072304 in words is "twenty-two million, seventy-two thousand, three hundred four".