1135720 has 16 divisors (see below), whose sum is σ = 2555460. Its totient is φ = 454272.

The previous prime is 1135711. The next prime is 1135721. The reversal of 1135720 is 275311.

It can be written as a sum of positive squares in 2 ways, for example, as 1069156 + 66564 = 1034^2 + 258^2 .

It is not an unprimeable number, because it can be changed into a prime (1135721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14157 + ... + 14236.

2^1135720 is an apocalyptic number.

1135720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135720 is an abundant number, since it is smaller than the sum of its proper divisors (1419740).

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

1135720 is a wasteful number, since it uses less digits than its factorization.

1135720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28404 (or 28400 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1135720 is about 1065.7016468036. The cubic root of 1135720 is about 104.3334955159. Note that the first 3 decimals are identical.

The spelling of 1135720 in words is "one million, one hundred thirty-five thousand, seven hundred twenty".