129472016 has 40 divisors (see below), whose sum is σ = 254817024. Its totient is φ = 63722880.

The previous prime is 129472009. The next prime is 129472039. The reversal of 129472016 is 610274921.

It is a happy number.

129472016 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 467270 + ... + 467546.

Almost surely, 2^129472016 is an apocalyptic number.

129472016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129472016 is a deficient number, since it is larger than the sum of its proper divisors (125345008).

129472016 is a wasteful number, since it uses less digits than its factorization.

129472016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 129472016 is about 11378.5770639391. The cubic root of 129472016 is about 505.8929611578.

The spelling of 129472016 in words is "one hundred twenty-nine million, four hundred seventy-two thousand, sixteen".