198269826 has 16 divisors (see below), whose sum is σ = 417410400. Its totient is φ = 62611488.

The previous prime is 198269789. The next prime is 198269857. The reversal of 198269826 is 628962891.

198269826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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, 869491 + ... + 869718.

It is an arithmetic number, because the mean of its divisors is an integer number (26088150).

Almost surely, 2^198269826 is an apocalyptic number.

198269826 is the 8906-th centered pentagonal number.

198269826 is an abundant number, since it is smaller than the sum of its proper divisors (219140574).

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

198269826 is a wasteful number, since it uses less digits than its factorization.

198269826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739233.

The product of its digits is 746496, while the sum is 51.

The square root of 198269826 is about 14080.8318646307. The cubic root of 198269826 is about 583.1123081734.

The spelling of 198269826 in words is "one hundred ninety-eight million, two hundred sixty-nine thousand, eight hundred twenty-six".