22545290 has 32 divisors (see below), whose sum is σ = 42892416. Its totient is φ = 8514880.

The previous prime is 22545283. The next prime is 22545293. The reversal of 22545290 is 9254522.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22545293) 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, 18500 + ... + 19680.

It is an arithmetic number, because the mean of its divisors is an integer number (1340388).

Almost surely, 2^22545290 is an apocalyptic number.

22545290 is a deficient number, since it is larger than the sum of its proper divisors (20347126).

22545290 is a wasteful number, since it uses less digits than its factorization.

22545290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 22545290 is about 4748.1880754663. The cubic root of 22545290 is about 282.5001018090.

The spelling of 22545290 in words is "twenty-two million, five hundred forty-five thousand, two hundred ninety".