1156380 has 24 divisors (see below), whose sum is σ = 3238032. Its totient is φ = 308352.

The previous prime is 1156369. The next prime is 1156387. The reversal of 1156380 is 836511.

It is a self number, because there is not a number n which added to its sum of digits gives 1156380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9577 + ... + 9696.

It is an arithmetic number, because the mean of its divisors is an integer number (134918).

2^1156380 is an apocalyptic number.

1156380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156380 is an abundant number, since it is smaller than the sum of its proper divisors (2081652).

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

1156380 is a wasteful number, since it uses less digits than its factorization.

1156380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19285 (or 19283 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1156380 is about 1075.3511054535. The cubic root of 1156380 is about 104.9623447743.

The spelling of 1156380 in words is "one million, one hundred fifty-six thousand, three hundred eighty".