133304430 has 64 divisors (see below), whose sum is σ = 366778368. Its totient is φ = 30374400.

The previous prime is 133304419. The next prime is 133304471. The reversal of 133304430 is 34403331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 133304397 and 133304406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83419 + ... + 85001.

It is an arithmetic number, because the mean of its divisors is an integer number (5730912).

Almost surely, 2^133304430 is an apocalyptic number.

133304430 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 133304430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183389184).

133304430 is an abundant number, since it is smaller than the sum of its proper divisors (233473938).

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

133304430 is a wasteful number, since it uses less digits than its factorization.

133304430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 133304430 is about 11545.7537649129. The cubic root of 133304430 is about 510.8360374330.

Adding to 133304430 its reverse (34403331), we get a palindrome (167707761).

The spelling of 133304430 in words is "one hundred thirty-three million, three hundred four thousand, four hundred thirty".