1135780 has 24 divisors (see below), whose sum is σ = 2411640. Its totient is φ = 449280.

The previous prime is 1135777. The next prime is 1135819. The reversal of 1135780 is 875311.

It can be written as a sum of positive squares in 4 ways, for example, as 107584 + 1028196 = 328^2 + 1014^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1920 + ... + 2440.

It is an arithmetic number, because the mean of its divisors is an integer number (100485).

2^1135780 is an apocalyptic number.

1135780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1135780 is an abundant number, since it is smaller than the sum of its proper divisors (1275860).

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

1135780 is a wasteful number, since it uses less digits than its factorization.

1135780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1135780 is about 1065.7297968998. The cubic root of 1135780 is about 104.3353327937.

The spelling of 1135780 in words is "one million, one hundred thirty-five thousand, seven hundred eighty".