1115388 has 18 divisors (see below), whose sum is σ = 2819544. Its totient is φ = 371784.

The previous prime is 1115381. The next prime is 1115399. The reversal of 1115388 is 8835111.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15456 + ... + 15527.

2^1115388 is an apocalyptic number.

1115388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1115388 is an abundant number, since it is smaller than the sum of its proper divisors (1704156).

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

1115388 is a wasteful number, since it uses less digits than its factorization.

1115388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30993 (or 30988 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 1115388 is about 1056.1193114417. The cubic root of 1115388 is about 103.7071396002.

The spelling of 1115388 in words is "one million, one hundred fifteen thousand, three hundred eighty-eight".