129894506 has 16 divisors (see below), whose sum is σ = 223080000. Its totient is φ = 55568160.

The previous prime is 129894497. The next prime is 129894539. The reversal of 129894506 is 605498921.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 131 + ... + 16118.

It is an arithmetic number, because the mean of its divisors is an integer number (13942500).

Almost surely, 2^129894506 is an apocalyptic number.

129894506 is a deficient number, since it is larger than the sum of its proper divisors (93185494).

129894506 is a wasteful number, since it uses less digits than its factorization.

129894506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16829.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 129894506 is about 11397.1270941409. The cubic root of 129894506 is about 506.4426363171.

The spelling of 129894506 in words is "one hundred twenty-nine million, eight hundred ninety-four thousand, five hundred six".