1156940 has 12 divisors (see below), whose sum is σ = 2429616. Its totient is φ = 462768.

The previous prime is 1156927. The next prime is 1156949. The reversal of 1156940 is 496511.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1156949) 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, 28904 + ... + 28943.

It is an arithmetic number, because the mean of its divisors is an integer number (202468).

2^1156940 is an apocalyptic number.

1156940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156940 is an abundant number, since it is smaller than the sum of its proper divisors (1272676).

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

1156940 is a wasteful number, since it uses less digits than its factorization.

1156940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57856 (or 57854 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1156940 is about 1075.6114540112. The cubic root of 1156940 is about 104.9792854072.

The spelling of 1156940 in words is "one million, one hundred fifty-six thousand, nine hundred forty".