2072820 has 48 divisors (see below), whose sum is σ = 5866560. Its totient is φ = 546816.

The previous prime is 2072809. The next prime is 2072821. The reversal of 2072820 is 282702.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10644 + ... + 10836.

It is an arithmetic number, because the mean of its divisors is an integer number (122220).

2^2072820 is an apocalyptic number.

2072820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2072820 is an abundant number, since it is smaller than the sum of its proper divisors (3793740).

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

2072820 is a wasteful number, since it uses less digits than its factorization.

2072820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 2072820 is about 1439.7291411929. The cubic root of 2072820 is about 127.5030372210.

It can be divided in two parts, 207 and 2820, that multiplied together give a triangular number (583740 = T₁₀₈₀).

The spelling of 2072820 in words is "two million, seventy-two thousand, eight hundred twenty".