133387398 has 40 divisors (see below), whose sum is σ = 299614392. Its totient is φ = 44354304.

The previous prime is 133387381. The next prime is 133387403. The reversal of 133387398 is 893783331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 92761 + ... + 94187.

Almost surely, 2^133387398 is an apocalyptic number.

133387398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

133387398 is an abundant number, since it is smaller than the sum of its proper divisors (166226994).

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

133387398 is a wasteful number, since it uses less digits than its factorization.

133387398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2009 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 133387398 is about 11549.3462152626. The cubic root of 133387398 is about 510.9419960382.

It can be divided in two parts, 13338 and 7398, that added together give a 4-th power (20736 = 12⁴).

The spelling of 133387398 in words is "one hundred thirty-three million, three hundred eighty-seven thousand, three hundred ninety-eight".