3115998 has 36 divisors (see below), whose sum is σ = 7183800. Its totient is φ = 975936.

The previous prime is 3115993. The next prime is 3115999. The reversal of 3115998 is 8995113.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115991) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4903 + ... + 5501.

It is an arithmetic number, because the mean of its divisors is an integer number (199550).

Almost surely, 2^3115998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3115998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3591900).

3115998 is an abundant number, since it is smaller than the sum of its proper divisors (4067802).

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

3115998 is a wasteful number, since it uses less digits than its factorization.

3115998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 621 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 3115998 is about 1765.2189665874. The cubic root of 3115998 is about 146.0603678549.

Subtracting from 3115998 its product of digits (9720), we obtain a triangular number (3106278 = T₂₄₉₂).

The spelling of 3115998 in words is "three million, one hundred fifteen thousand, nine hundred ninety-eight".