1156040 has 16 divisors (see below), whose sum is σ = 2601180. Its totient is φ = 462400.

The previous prime is 1156039. The next prime is 1156073. The reversal of 1156040 is 406511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1044484 + 111556 = 1022^2 + 334^2 .

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, 14411 + ... + 14490.

2^1156040 is an apocalyptic number.

1156040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156040 is an abundant number, since it is smaller than the sum of its proper divisors (1445140).

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

1156040 is a wasteful number, since it uses less digits than its factorization.

1156040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28912 (or 28908 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1156040 is about 1075.1930059296. The cubic root of 1156040 is about 104.9520567215.

It can be divided in two parts, 11560 and 40, that multiplied together give a square (462400 = 680²).

The spelling of 1156040 in words is "one million, one hundred fifty-six thousand, forty".