133502730 has 32 divisors (see below), whose sum is σ = 321608448. Its totient is φ = 35467200.

The previous prime is 133502713. The next prime is 133502731. The reversal of 133502730 is 37205331.

It is a self number, because there is not a number n which added to its sum of digits gives 133502730.

It is not an unprimeable number, because it can be changed into a prime (133502731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81 + ... + 16340.

It is an arithmetic number, because the mean of its divisors is an integer number (10050264).

Almost surely, 2^133502730 is an apocalyptic number.

133502730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133502730 is an abundant number, since it is smaller than the sum of its proper divisors (188105718).

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

133502730 is a wasteful number, since it uses less digits than its factorization.

133502730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16702.

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 133502730 is about 11554.3381463414. The cubic root of 133502730 is about 511.0892138102.

The spelling of 133502730 in words is "one hundred thirty-three million, five hundred two thousand, seven hundred thirty".