129950320 has 40 divisors (see below), whose sum is σ = 309511440. Its totient is φ = 50711040.

The previous prime is 129950309. The next prime is 129950369. The reversal of 129950320 is 23059921.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 16530 + ... + 23089.

It is an arithmetic number, because the mean of its divisors is an integer number (7737786).

Almost surely, 2^129950320 is an apocalyptic number.

129950320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129950320 is an abundant number, since it is smaller than the sum of its proper divisors (179561120).

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

129950320 is a wasteful number, since it uses less digits than its factorization.

129950320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39673 (or 39667 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 129950320 is about 11399.5754306904. The cubic root of 129950320 is about 506.5151632277.

The spelling of 129950320 in words is "one hundred twenty-nine million, nine hundred fifty thousand, three hundred twenty".