2621982 has 16 divisors (see below), whose sum is σ = 5720832. Its totient is φ = 794520.

The previous prime is 2621951. The next prime is 2621987. The reversal of 2621982 is 2891262.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621987) by changing a digit.

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, 19798 + ... + 19929.

It is an arithmetic number, because the mean of its divisors is an integer number (357552).

2^2621982 is an apocalyptic number.

2621982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2621982 is an abundant number, since it is smaller than the sum of its proper divisors (3098850).

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

2621982 is a wasteful number, since it uses less digits than its factorization.

2621982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39743.

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

The square root of 2621982 is about 1619.2535317238. The cubic root of 2621982 is about 137.8933223034.

The spelling of 2621982 in words is "two million, six hundred twenty-one thousand, nine hundred eighty-two".