2669820 has 24 divisors (see below), whose sum is σ = 7475664. Its totient is φ = 711936.

The previous prime is 2669803. The next prime is 2669837. The reversal of 2669820 is 289662.

It is an interprime number because it is at equal distance from previous prime (2669803) and next prime (2669837).

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, 22189 + ... + 22308.

It is an arithmetic number, because the mean of its divisors is an integer number (311486).

2^2669820 is an apocalyptic number.

2669820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2669820 is an abundant number, since it is smaller than the sum of its proper divisors (4805844).

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

2669820 is a wasteful number, since it uses less digits than its factorization.

2669820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44509 (or 44507 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2669820 is about 1633.9583838030. The cubic root of 2669820 is about 138.7268933196.

The spelling of 2669820 in words is "two million, six hundred sixty-nine thousand, eight hundred twenty".