8622990 has 64 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 2270592.

The previous prime is 8622983. The next prime is 8623003. The reversal of 8622990 is 992268.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29284 + ... + 29576.

It is an arithmetic number, because the mean of its divisors is an integer number (363825).

Almost surely, 2^8622990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8622990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11642400).

8622990 is an abundant number, since it is smaller than the sum of its proper divisors (14661810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8622990 is a wasteful number, since it uses less digits than its factorization.

8622990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 8622990 is about 2936.4928060528. The cubic root of 8622990 is about 205.0623645276.

The spelling of 8622990 in words is "eight million, six hundred twenty-two thousand, nine hundred ninety".