22655290 has 16 divisors (see below), whose sum is σ = 46605312. Its totient is φ = 7767504.

The previous prime is 22655287. The next prime is 22655333. The reversal of 22655290 is 9255622.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161754 + ... + 161893.

It is an arithmetic number, because the mean of its divisors is an integer number (2912832).

Almost surely, 2^22655290 is an apocalyptic number.

22655290 is an abundant number, since it is smaller than the sum of its proper divisors (23950022).

22655290 is a wasteful number, since it uses less digits than its factorization.

22655290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323661.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 22655290 is about 4759.7573467562. The cubic root of 22655290 is about 282.9588023287.

The spelling of 22655290 in words is "twenty-two million, six hundred fifty-five thousand, two hundred ninety".