133210730 has 32 divisors (see below), whose sum is σ = 250943184. Its totient is φ = 50858496.

The previous prime is 133210711. The next prime is 133210739. The reversal of 133210730 is 37012331.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 72199009 + 61011721 = 8497^2 + 7811^2 .

It is not an unprimeable number, because it can be changed into a prime (133210739) 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, 16214 + ... + 23006.

Almost surely, 2^133210730 is an apocalyptic number.

133210730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133210730 is a deficient number, since it is larger than the sum of its proper divisors (117732454).

133210730 is a wasteful number, since it uses less digits than its factorization.

133210730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 133210730 is about 11541.6952827563. The cubic root of 133210730 is about 510.7163200914.

The spelling of 133210730 in words is "one hundred thirty-three million, two hundred ten thousand, seven hundred thirty".