198726 has 16 divisors (see below), whose sum is σ = 433728. Its totient is φ = 60200.

The previous prime is 198719. The next prime is 198733. The reversal of 198726 is 627891.

It is an interprime number because it is at equal distance from previous prime (198719) and next prime (198733).

It is a super-3 number, since 3×198726³ = 23544275333403528, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1440 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (27108).

2¹⁹⁸⁷²⁶ is an apocalyptic number.

198726 is an abundant number, since it is smaller than the sum of its proper divisors (235002).

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

198726 is a wasteful number, since it uses less digits than its factorization.

198726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027.

The product of its digits is 6048, while the sum is 33.

The square root of 198726 is about 445.7869446271. The cubic root of 198726 is about 58.3559168793.

The spelling of 198726 in words is "one hundred ninety-eight thousand, seven hundred twenty-six".