1866272 has 12 divisors (see below), whose sum is σ = 3674286. Its totient is φ = 933120.

The previous prime is 1866269. The next prime is 1866281. The reversal of 1866272 is 2726681.

It can be written as a sum of positive squares in only one way, i.e., 1860496 + 5776 = 1364^2 + 76^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 58321 = 1866272 / (1 + 8 + 6 + 6 + 2 + 7 + 2).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29129 + ... + 29192.

2^1866272 is an apocalyptic number.

It is an amenable number.

1866272 is a deficient number, since it is larger than the sum of its proper divisors (1808014).

1866272 is an equidigital number, since it uses as much as digits as its factorization.

1866272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58331 (or 58323 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 1866272 is about 1366.1156612820. The cubic root of 1866272 is about 123.1189718505.

The spelling of 1866272 in words is "one million, eight hundred sixty-six thousand, two hundred seventy-two".