15982198 has 4 divisors (see below), whose sum is σ = 23973300. Its totient is φ = 7991098.

The previous prime is 15982181. The next prime is 15982199. The reversal of 15982198 is 89128951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89128951 = 4817 ⋅18503.

It is a super-2 number, since 2×15982198² = 510861305822408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15982199) by changing a digit.

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, 3995548 + ... + 3995551.

It is an arithmetic number, because the mean of its divisors is an integer number (5993325).

Almost surely, 2^15982198 is an apocalyptic number.

15982198 is a deficient number, since it is larger than the sum of its proper divisors (7991102).

15982198 is an equidigital number, since it uses as much as digits as its factorization.

15982198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7991101.

The product of its digits is 51840, while the sum is 43.

The square root of 15982198 is about 3997.7741306882. The cubic root of 15982198 is about 251.8907206537.

The spelling of 15982198 in words is "fifteen million, nine hundred eighty-two thousand, one hundred ninety-eight".