1115840412 has 72 divisors (see below), whose sum is σ = 2938615680. Its totient is φ = 356607360.

The previous prime is 1115840399. The next prime is 1115840449. The reversal of 1115840412 is 2140485111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117058 + ... + 126230.

Almost surely, 2^1115840412 is an apocalyptic number.

1115840412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1115840412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469307840).

1115840412 is an abundant number, since it is smaller than the sum of its proper divisors (1822775268).

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

1115840412 is a wasteful number, since it uses less digits than its factorization.

1115840412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9323 (or 9318 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 1115840412 is about 33404.1975206710. The cubic root of 1115840412 is about 1037.2115923951.

The spelling of 1115840412 in words is "one billion, one hundred fifteen million, eight hundred forty thousand, four hundred twelve".