2015198 has 4 divisors (see below), whose sum is σ = 3022800. Its totient is φ = 1007598.

The previous prime is 2015183. The next prime is 2015201. The reversal of 2015198 is 8915102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2015198² = 8122045958408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503798 + ... + 503801.

It is an arithmetic number, because the mean of its divisors is an integer number (755700).

2^2015198 is an apocalyptic number.

2015198 is a deficient number, since it is larger than the sum of its proper divisors (1007602).

2015198 is a wasteful number, since it uses less digits than its factorization.

2015198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007601.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 2015198 is about 1419.5766974701. The cubic root of 2015198 is about 126.3104380104.

The spelling of 2015198 in words is "two million, fifteen thousand, one hundred ninety-eight".