133283500 has 96 divisors (see below), whose sum is σ = 336615552. Its totient is φ = 45158400.

The previous prime is 133283471. The next prime is 133283561. The reversal of 133283500 is 5382331.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 395332 + ... + 395668.

It is an arithmetic number, because the mean of its divisors is an integer number (3506412).

Almost surely, 2^133283500 is an apocalyptic number.

133283500 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 133283500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168307776).

133283500 is an abundant number, since it is smaller than the sum of its proper divisors (203332052).

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

133283500 is a wasteful number, since it uses less digits than its factorization.

133283500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 133283500 is about 11544.8473354999. The cubic root of 133283500 is about 510.8093007425.

The spelling of 133283500 in words is "one hundred thirty-three million, two hundred eighty-three thousand, five hundred".