1980027 has 24 divisors (see below), whose sum is σ = 3335904. Its totient is φ = 1108224.

The previous prime is 1980023. The next prime is 1980029. The reversal of 1980027 is 7200891.

It is not a de Polignac number, because 1980027 - 2² = 1980023 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1980023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3043 + ... + 3635.

It is an arithmetic number, because the mean of its divisors is an integer number (138996).

2^1980027 is an apocalyptic number.

1980027 is a deficient number, since it is larger than the sum of its proper divisors (1355877).

1980027 is a wasteful number, since it uses less digits than its factorization.

1980027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1980027 is about 1407.1343219466. The cubic root of 1980027 is about 125.5712943378.

The spelling of 1980027 in words is "one million, nine hundred eighty thousand, twenty-seven".