129830530 has 32 divisors (see below), whose sum is σ = 250251120. Its totient is φ = 48322560.

The previous prime is 129830527. The next prime is 129830543. The reversal of 129830530 is 35038921.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12173121 + 117657409 = 3489^2 + 10847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 129830492 and 129830501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10840 + ... + 19420.

Almost surely, 2^129830530 is an apocalyptic number.

129830530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129830530 is a deficient number, since it is larger than the sum of its proper divisors (120420590).

129830530 is a wasteful number, since it uses less digits than its factorization.

129830530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 129830530 is about 11394.3200762485. The cubic root of 129830530 is about 506.3594778222.

The spelling of 129830530 in words is "one hundred twenty-nine million, eight hundred thirty thousand, five hundred thirty".