2621490 has 16 divisors (see below), whose sum is σ = 6291648. Its totient is φ = 699056.

The previous prime is 2621477. The next prime is 2621501. The reversal of 2621490 is 941262.

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 2²¹ + 1 + 4 + 9 + 0 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2621490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43662 + ... + 43721.

It is an arithmetic number, because the mean of its divisors is an integer number (393228).

2^2621490 is an apocalyptic number.

2621490 is an abundant number, since it is smaller than the sum of its proper divisors (3670158).

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

2621490 is a wasteful number, since it uses less digits than its factorization.

2621490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87393.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2621490 is about 1619.1016027415. The cubic root of 2621490 is about 137.8846967982.

The spelling of 2621490 in words is "two million, six hundred twenty-one thousand, four hundred ninety".