129734786 has 16 divisors (see below), whose sum is σ = 206716536. Its totient is φ = 60854016.

The previous prime is 129734779. The next prime is 129734791. The reversal of 129734786 is 687437921.

It can be written as a sum of positive squares in 4 ways, for example, as 54479161 + 75255625 = 7381^2 + 8675^2 .

It is a super-2 number, since 2×129734786² = 33662229396931592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 129734786.

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, 4760 + ... + 16796.

Almost surely, 2^129734786 is an apocalyptic number.

129734786 is a deficient number, since it is larger than the sum of its proper divisors (76981750).

129734786 is a wasteful number, since it uses less digits than its factorization.

129734786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12373.

The product of its digits is 508032, while the sum is 47.

The square root of 129734786 is about 11390.1179098375. The cubic root of 129734786 is about 506.2349749948.

The spelling of 129734786 in words is "one hundred twenty-nine million, seven hundred thirty-four thousand, seven hundred eighty-six".