1115980 has 12 divisors (see below), whose sum is σ = 2343600. Its totient is φ = 446384.

The previous prime is 1115941. The next prime is 1115987. The reversal of 1115980 is 895111.

It is a super-2 number, since 2×1115980² = 2490822720800, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1115987) 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, 27880 + ... + 27919.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

2^1115980 is an apocalyptic number.

1115980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115980 is an abundant number, since it is smaller than the sum of its proper divisors (1227620).

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

1115980 is a wasteful number, since it uses less digits than its factorization.

1115980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55808 (or 55806 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 1115980 is about 1056.3995456266. The cubic root of 1115980 is about 103.7254841189.

The spelling of 1115980 in words is "one million, one hundred fifteen thousand, nine hundred eighty".