22273012 has 6 divisors (see below), whose sum is σ = 38977778. Its totient is φ = 11136504.

The previous prime is 22272989. The next prime is 22273019. The reversal of 22273012 is 21037222.

It can be written as a sum of positive squares in only one way, i.e., 15335056 + 6937956 = 3916^2 + 2634^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22273019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2784123 + ... + 2784130.

Almost surely, 2^22273012 is an apocalyptic number.

It is an amenable number.

22273012 is a deficient number, since it is larger than the sum of its proper divisors (16704766).

22273012 is a wasteful number, since it uses less digits than its factorization.

22273012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568257 (or 5568255 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 22273012 is about 4719.4292027744. The cubic root of 22273012 is about 281.3582475833.

The spelling of 22273012 in words is "twenty-two million, two hundred seventy-three thousand, twelve".