129626316 has 18 divisors (see below), whose sum is σ = 327666612. Its totient is φ = 43208760.

The previous prime is 129626311. The next prime is 129626323. The reversal of 129626316 is 613626921.

It is a happy number.

129626316 is a `hidden beast` number, since 1 + 29 + 626 + 3 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3600731 = 129626316 / (1 + 2 + 9 + 6 + 2 + 6 + 3 + 1 + 6).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (129626311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1800330 + ... + 1800401.

Almost surely, 2^129626316 is an apocalyptic number.

It is an amenable number.

129626316 is an abundant number, since it is smaller than the sum of its proper divisors (198040296).

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

129626316 is a wasteful number, since it uses less digits than its factorization.

129626316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600741 (or 3600736 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 129626316 is about 11385.3553304234. The cubic root of 129626316 is about 506.0938496006.

The spelling of 129626316 in words is "one hundred twenty-nine million, six hundred twenty-six thousand, three hundred sixteen".