1186720 has 24 divisors (see below), whose sum is σ = 2804004. Its totient is φ = 474624.

The previous prime is 1186699. The next prime is 1186739. The reversal of 1186720 is 276811.

It can be written as a sum of positive squares in 2 ways, for example, as 1175056 + 11664 = 1084^2 + 108^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3549 + ... + 3868.

2^1186720 is an apocalyptic number.

1186720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1186720 is an abundant number, since it is smaller than the sum of its proper divisors (1617284).

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

1186720 is an equidigital number, since it uses as much as digits as its factorization.

1186720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432 (or 7424 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1186720 is about 1089.3667885520. The cubic root of 1186720 is about 105.8723989674.

Subtracting from 1186720 its reverse (276811), we obtain a palindrome (909909).

The spelling of 1186720 in words is "one million, one hundred eighty-six thousand, seven hundred twenty".