22272890 has 32 divisors (see below), whose sum is σ = 43609104. Its totient is φ = 8156160.

The previous prime is 22272857. The next prime is 22272893. The reversal of 22272890 is 9827222.

It can be written as a sum of positive squares in 8 ways, for example, as 16736281 + 5536609 = 4091^2 + 2353^2 .

It is not an unprimeable number, because it can be changed into a prime (22272893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4520 + ... + 8060.

Almost surely, 2^22272890 is an apocalyptic number.

22272890 is a deficient number, since it is larger than the sum of its proper divisors (21336214).

22272890 is a wasteful number, since it uses less digits than its factorization.

22272890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 22272890 is about 4719.4162774648. The cubic root of 22272890 is about 281.3577338709.

The spelling of 22272890 in words is "twenty-two million, two hundred seventy-two thousand, eight hundred ninety".