133423398 has 48 divisors (see below), whose sum is σ = 295167600. Its totient is φ = 43547328.

The previous prime is 133423357. The next prime is 133423417. The reversal of 133423398 is 893324331.

133423398 is a `hidden beast` number, since 1 + 334 + 233 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 382128 + ... + 382476.

It is an arithmetic number, because the mean of its divisors is an integer number (6149325).

Almost surely, 2^133423398 is an apocalyptic number.

133423398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

133423398 is an abundant number, since it is smaller than the sum of its proper divisors (161744202).

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

133423398 is a wasteful number, since it uses less digits than its factorization.

133423398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 738 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 133423398 is about 11550.9046398973. The cubic root of 133423398 is about 510.9879580446.

It can be divided in two parts, 1334233 and 98, that added together give a palindrome (1334331).

The spelling of 133423398 in words is "one hundred thirty-three million, four hundred twenty-three thousand, three hundred ninety-eight".