129635072 has 36 divisors (see below), whose sum is σ = 295734096. Its totient is φ = 55557120.

The previous prime is 129635027. The next prime is 129635089. The reversal of 129635072 is 270536921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34379 + ... + 37962.

It is an arithmetic number, because the mean of its divisors is an integer number (8214836).

Almost surely, 2^129635072 is an apocalyptic number.

It is an amenable number.

129635072 is an abundant number, since it is smaller than the sum of its proper divisors (166099024).

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

129635072 is an frugal number, since it uses more digits than its factorization.

129635072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72364 (or 72350 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 129635072 is about 11385.7398529915. The cubic root of 129635072 is about 506.1052445552.

The spelling of 129635072 in words is "one hundred twenty-nine million, six hundred thirty-five thousand, seventy-two".