2164940 has 12 divisors (see below), whose sum is σ = 4546416. Its totient is φ = 865968.

The previous prime is 2164927. The next prime is 2164963. The reversal of 2164940 is 494612.

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 3 ways as a sum of consecutive naturals, for example, 54104 + ... + 54143.

It is an arithmetic number, because the mean of its divisors is an integer number (378868).

2^2164940 is an apocalyptic number.

2164940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164940 is an abundant number, since it is smaller than the sum of its proper divisors (2381476).

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

2164940 is a wasteful number, since it uses less digits than its factorization.

2164940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108256 (or 108254 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2164940 is about 1471.3735079850. The cubic root of 2164940 is about 129.3645518101.

The spelling of 2164940 in words is "two million, one hundred sixty-four thousand, nine hundred forty".