2944820 has 24 divisors (see below), whose sum is σ = 6271944. Its totient is φ = 1161216.

The previous prime is 2944819. The next prime is 2944831. The reversal of 2944820 is 284492.

It can be written as a sum of positive squares in 4 ways, for example, as 795664 + 2149156 = 892^2 + 1466^2 .

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 2468.

It is an arithmetic number, because the mean of its divisors is an integer number (261331).

2^2944820 is an apocalyptic number.

2944820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2944820 is an abundant number, since it is smaller than the sum of its proper divisors (3327124).

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

2944820 is a wasteful number, since it uses less digits than its factorization.

2944820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2944820 is about 1716.0477848825. The cubic root of 2944820 is about 143.3352202143.

The spelling of 2944820 in words is "two million, nine hundred forty-four thousand, eight hundred twenty".