18290622 has 24 divisors (see below), whose sum is σ = 42554376. Its totient is φ = 5225808.

The previous prime is 18290581. The next prime is 18290639. The reversal of 18290622 is 22609281.

It is a self number, because there is not a number n which added to its sum of digits gives 18290622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30813 + ... + 31400.

It is an arithmetic number, because the mean of its divisors is an integer number (1773099).

Almost surely, 2^18290622 is an apocalyptic number.

18290622 is an abundant number, since it is smaller than the sum of its proper divisors (24263754).

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

18290622 is a wasteful number, since it uses less digits than its factorization.

18290622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62232 (or 62225 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18290622 is about 4276.7536753945. The cubic root of 18290622 is about 263.4770697784.

The spelling of 18290622 in words is "eighteen million, two hundred ninety thousand, six hundred twenty-two".