129903516 has 72 divisors (see below), whose sum is σ = 346970624. Its totient is φ = 40914720.

The previous prime is 129903503. The next prime is 129903523. The reversal of 129903516 is 615309921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46635 + ... + 49341.

Almost surely, 2^129903516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129903516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173485312).

129903516 is an abundant number, since it is smaller than the sum of its proper divisors (217067108).

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

129903516 is a wasteful number, since it uses less digits than its factorization.

129903516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791 (or 2786 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 129903516 is about 11397.5223623382. The cubic root of 129903516 is about 506.4543456721.

The spelling of 129903516 in words is "one hundred twenty-nine million, nine hundred three thousand, five hundred sixteen".