133730530 has 16 divisors (see below), whose sum is σ = 241044984. Its totient is φ = 53418880.

The previous prime is 133730461. The next prime is 133730549. The reversal of 133730530 is 35037331.

It can be written as a sum of positive squares in 4 ways, for example, as 74425129 + 59305401 = 8627^2 + 7701^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133730495 and 133730504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1177 + ... + 16396.

Almost surely, 2^133730530 is an apocalyptic number.

133730530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133730530 is a deficient number, since it is larger than the sum of its proper divisors (107314454).

133730530 is a wasteful number, since it uses less digits than its factorization.

133730530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18341.

The product of its (nonzero) digits is 2835, while the sum is 25.

The square root of 133730530 is about 11564.1917140802. The cubic root of 133730530 is about 511.3797446107.

Adding to 133730530 its reverse (35037331), we get a palindrome (168767861).

The spelling of 133730530 in words is "one hundred thirty-three million, seven hundred thirty thousand, five hundred thirty".