129506384 has 20 divisors (see below), whose sum is σ = 286764384. Its totient is φ = 55502688.

The previous prime is 129506371. The next prime is 129506407. The reversal of 129506384 is 483605921.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578042 + ... + 578265.

Almost surely, 2^129506384 is an apocalyptic number.

129506384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129506384 is an abundant number, since it is smaller than the sum of its proper divisors (157258000).

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

129506384 is a wasteful number, since it uses less digits than its factorization.

129506384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156322 (or 1156316 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 129506384 is about 11380.0871701407. The cubic root of 129506384 is about 505.9377198417.

The spelling of 129506384 in words is "one hundred twenty-nine million, five hundred six thousand, three hundred eighty-four".