22766290 has 8 divisors (see below), whose sum is σ = 40979340. Its totient is φ = 9106512.

The previous prime is 22766273. The next prime is 22766311. The reversal of 22766290 is 9266722.

It can be written as a sum of positive squares in 2 ways, for example, as 21427641 + 1338649 = 4629^2 + 1157^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1138305 + ... + 1138324.

Almost surely, 2^22766290 is an apocalyptic number.

22766290 is a deficient number, since it is larger than the sum of its proper divisors (18213050).

22766290 is a wasteful number, since it uses less digits than its factorization.

22766290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276636.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 22766290 is about 4771.4033575040. The cubic root of 22766290 is about 283.4201702306.

The spelling of 22766290 in words is "twenty-two million, seven hundred sixty-six thousand, two hundred ninety".