1780132 has 6 divisors (see below), whose sum is σ = 3115238. Its totient is φ = 890064.

The previous prime is 1780127. The next prime is 1780133. The reversal of 1780132 is 2310871.

It can be written as a sum of positive squares in only one way, i.e., 1779556 + 576 = 1334^2 + 24^2 .

It is not an unprimeable number, because it can be changed into a prime (1780133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222513 + ... + 222520.

2^1780132 is an apocalyptic number.

It is an amenable number.

1780132 is a deficient number, since it is larger than the sum of its proper divisors (1335106).

1780132 is a wasteful number, since it uses less digits than its factorization.

1780132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445037 (or 445035 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1780132 is about 1334.2158745870. The cubic root of 1780132 is about 121.1948230896.

The spelling of 1780132 in words is "one million, seven hundred eighty thousand, one hundred thirty-two".