1980726 has 16 divisors (see below), whose sum is σ = 4321728. Its totient is φ = 600200.

The previous prime is 1980707. The next prime is 1980743. The reversal of 1980726 is 6270891.

It is a Harshad number since it is a multiple of its sum of digits (33).

1980726 is a modest number, since divided by 726 gives 198 as remainder.

It is a Curzon number.

It is a congruent number.

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, 14940 + ... + 15071.

It is an arithmetic number, because the mean of its divisors is an integer number (270108).

2^1980726 is an apocalyptic number.

1980726 is an abundant number, since it is smaller than the sum of its proper divisors (2341002).

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

1980726 is a wasteful number, since it uses less digits than its factorization.

1980726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30027.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1980726 is about 1407.3826771706. The cubic root of 1980726 is about 125.5860692218.

The spelling of 1980726 in words is "one million, nine hundred eighty thousand, seven hundred twenty-six".