129016960 has 32 divisors (see below), whose sum is σ = 308432700. Its totient is φ = 51606528.

The previous prime is 129016957. The next prime is 129016991. The reversal of 129016960 is 69610921.

It can be written as a sum of positive squares in 2 ways, for example, as 127780416 + 1236544 = 11304^2 + 1112^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 100155 + ... + 101434.

Almost surely, 2^129016960 is an apocalyptic number.

129016960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129016960 is an abundant number, since it is smaller than the sum of its proper divisors (179415740).

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

129016960 is an equidigital number, since it uses as much as digits as its factorization.

129016960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201608 (or 201596 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 129016960 is about 11358.5632894306. The cubic root of 129016960 is about 505.2995771750.

The spelling of 129016960 in words is "one hundred twenty-nine million, sixteen thousand, nine hundred sixty".