2086780 has 24 divisors (see below), whose sum is σ = 4429152. Its totient is φ = 825792.

The previous prime is 2086759. The next prime is 2086781. The reversal of 2086780 is 876802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2086781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554 + ... + 2566.

It is an arithmetic number, because the mean of its divisors is an integer number (184548).

2^2086780 is an apocalyptic number.

2086780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2086780 is an abundant number, since it is smaller than the sum of its proper divisors (2342372).

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

2086780 is a wasteful number, since it uses less digits than its factorization.

2086780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 2086780 is about 1444.5691399168. The cubic root of 2086780 is about 127.7886322782.

The spelling of 2086780 in words is "two million, eighty-six thousand, seven hundred eighty".