133284690 has 160 divisors (see below), whose sum is σ = 447030144. Its totient is φ = 27682560.

The previous prime is 133284659. The next prime is 133284703. The reversal of 133284690 is 96482331.

It is a super-3 number, since 3×133284690³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 61302 + ... + 63438.

Almost surely, 2^133284690 is an apocalyptic number.

133284690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133284690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (223515072).

133284690 is an abundant number, since it is smaller than the sum of its proper divisors (313745454).

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

133284690 is a wasteful number, since it uses less digits than its factorization.

133284690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174 (or 2165 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 133284690 is about 11544.8988735285. The cubic root of 133284690 is about 510.8108209638.

The spelling of 133284690 in words is "one hundred thirty-three million, two hundred eighty-four thousand, six hundred ninety".