1818272 has 12 divisors (see below), whose sum is σ = 3579786. Its totient is φ = 909120.

The previous prime is 1818241. The next prime is 1818277. The reversal of 1818272 is 2728181.

It can be written as a sum of positive squares in only one way, i.e., 1628176 + 190096 = 1276^2 + 436^2 .

It is a super-2 number, since 2×1818272² = 6612226131968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1818277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28379 + ... + 28442.

2^1818272 is an apocalyptic number.

It is an amenable number.

1818272 is a deficient number, since it is larger than the sum of its proper divisors (1761514).

1818272 is an equidigital number, since it uses as much as digits as its factorization.

1818272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56831 (or 56823 counting only the distinct ones).

The product of its digits is 1792, while the sum is 29.

The square root of 1818272 is about 1348.4331648250. The cubic root of 1818272 is about 122.0542623441.

Subtracting 1818272 from its reverse (2728181), we obtain a palindrome (909909).

The spelling of 1818272 in words is "one million, eight hundred eighteen thousand, two hundred seventy-two".