2072780 has 24 divisors (see below), whose sum is σ = 4426800. Its totient is φ = 815040.

The previous prime is 2072773. The next prime is 2072789. The reversal of 2072780 is 872702.

It is not an unprimeable number, because it can be changed into a prime (2072789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (184450).

2^2072780 is an apocalyptic number.

2072780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2072780 is an abundant number, since it is smaller than the sum of its proper divisors (2354020).

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

2072780 is a wasteful number, since it uses less digits than its factorization.

2072780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769 (or 1767 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 2072780 is about 1439.7152496240. The cubic root of 2072780 is about 127.5022170574.

The spelling of 2072780 in words is "two million, seventy-two thousand, seven hundred eighty".