2622990 has 16 divisors (see below), whose sum is σ = 6295248. Its totient is φ = 699456.

The previous prime is 2622959. The next prime is 2623039. The reversal of 2622990 is 992262.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 87433 = 2622990 / (2 + 6 + 2 + 2 + 9 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43687 + ... + 43746.

It is an arithmetic number, because the mean of its divisors is an integer number (393453).

2^2622990 is an apocalyptic number.

2622990 is an abundant number, since it is smaller than the sum of its proper divisors (3672258).

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

2622990 is a wasteful number, since it uses less digits than its factorization.

2622990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87443.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2622990 is about 1619.5647563466. The cubic root of 2622990 is about 137.9109907009.

The spelling of 2622990 in words is "two million, six hundred twenty-two thousand, nine hundred ninety".