129501630 has 24 divisors (see below), whose sum is σ = 336704472. Its totient is φ = 34533744.

The previous prime is 129501623. The next prime is 129501679. The reversal of 129501630 is 36105921.

129501630 is a `hidden beast` number, since 1 + 29 + 5 + 0 + 1 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 129501594 and 129501603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719364 + ... + 719543.

It is an arithmetic number, because the mean of its divisors is an integer number (14029353).

Almost surely, 2^129501630 is an apocalyptic number.

129501630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129501630 is an abundant number, since it is smaller than the sum of its proper divisors (207202842).

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

129501630 is a wasteful number, since it uses less digits than its factorization.

129501630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438920 (or 1438917 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 129501630 is about 11379.8782946040. The cubic root of 129501630 is about 505.9315290083.

The spelling of 129501630 in words is "one hundred twenty-nine million, five hundred one thousand, six hundred thirty".