133003500 has 192 divisors, whose sum is σ = 452874240. Its totient is φ = 29702400.

The previous prime is 133003487. The next prime is 133003543. The reversal of 133003500 is 5300331.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 133003500.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 556381 + ... + 556619.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^133003500 is an apocalyptic number.

133003500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133003500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226437120).

133003500 is an abundant number, since it is smaller than the sum of its proper divisors (319870740).

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

133003500 is a wasteful number, since it uses less digits than its factorization.

133003500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 15.

The square root of 133003500 is about 11532.7143379172. The cubic root of 133003500 is about 510.4513497650.

Adding to 133003500 its reverse (5300331), we get a palindrome (138303831).

The spelling of 133003500 in words is "one hundred thirty-three million, three thousand, five hundred".