129634016 has 12 divisors (see below), whose sum is σ = 255217032. Its totient is φ = 64816992.

The previous prime is 129634009. The next prime is 129634019. The reversal of 129634016 is 610436921.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 4051063 = 129634016 / (1 + 2 + 9 + 6 + 3 + 4 + 0 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129634019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2025500 + ... + 2025563.

It is an arithmetic number, because the mean of its divisors is an integer number (21268086).

Almost surely, 2^129634016 is an apocalyptic number.

129634016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129634016 is a deficient number, since it is larger than the sum of its proper divisors (125583016).

129634016 is an equidigital number, since it uses as much as digits as its factorization.

129634016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051073 (or 4051065 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 129634016 is about 11385.6934790991. The cubic root of 129634016 is about 506.1038703166.

The spelling of 129634016 in words is "one hundred twenty-nine million, six hundred thirty-four thousand, sixteen".