1115860 has 12 divisors (see below), whose sum is σ = 2343348. Its totient is φ = 446336.

The previous prime is 1115857. The next prime is 1115879. The reversal of 1115860 is 685111.

1115860 = T₈₆₁ + T₈₆₂ + T₈₆₃.

It can be written as a sum of positive squares in 2 ways, for example, as 217156 + 898704 = 466^2 + 948^2 .

It is a congruent number.

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, 27877 + ... + 27916.

It is an arithmetic number, because the mean of its divisors is an integer number (195279).

2^1115860 is an apocalyptic number.

1115860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1115860 is the 863-rd centered triangular number.

It is an amenable number.

1115860 is an abundant number, since it is smaller than the sum of its proper divisors (1227488).

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

1115860 is a wasteful number, since it uses less digits than its factorization.

1115860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55802 (or 55800 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 1115860 is about 1056.3427474073. The cubic root of 1115860 is about 103.7217661597.

The spelling of 1115860 in words is "one million, one hundred fifteen thousand, eight hundred sixty".