1115998 has 8 divisors (see below), whose sum is σ = 1802808. Its totient is φ = 515064.

The previous prime is 1115993. The next prime is 1116001. The reversal of 1115998 is 8995111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115993) 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, 21436 + ... + 21487.

It is an arithmetic number, because the mean of its divisors is an integer number (225351).

2^1115998 is an apocalyptic number.

1115998 is a deficient number, since it is larger than the sum of its proper divisors (686810).

1115998 is a wasteful number, since it uses less digits than its factorization.

1115998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42938.

The product of its digits is 3240, while the sum is 34.

The square root of 1115998 is about 1056.4080650961. The cubic root of 1115998 is about 103.7260417898.

The spelling of 1115998 in words is "one million, one hundred fifteen thousand, nine hundred ninety-eight".