2039820 has 24 divisors (see below), whose sum is σ = 5711664. Its totient is φ = 543936.

The previous prime is 2039819. The next prime is 2039833. The reversal of 2039820 is 289302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16939 + ... + 17058.

It is an arithmetic number, because the mean of its divisors is an integer number (237986).

2^2039820 is an apocalyptic number.

2039820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2039820 is an abundant number, since it is smaller than the sum of its proper divisors (3671844).

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

2039820 is a wasteful number, since it uses less digits than its factorization.

2039820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34009 (or 34007 counting only the distinct ones).

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

The square root of 2039820 is about 1428.2226717147. Note that the first 3 decimals coincide. The cubic root of 2039820 is about 126.8227838064.

The spelling of 2039820 in words is "two million, thirty-nine thousand, eight hundred twenty".