129630450 has 24 divisors (see below), whose sum is σ = 321483888. Its totient is φ = 34568080.

The previous prime is 129630439. The next prime is 129630503. The reversal of 129630450 is 54036921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 431952 + ... + 432251.

It is an arithmetic number, because the mean of its divisors is an integer number (13395162).

Almost surely, 2^129630450 is an apocalyptic number.

129630450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129630450 is an abundant number, since it is smaller than the sum of its proper divisors (191853438).

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

129630450 is a wasteful number, since it uses less digits than its factorization.

129630450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864218 (or 864213 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 129630450 is about 11385.5368779869. The cubic root of 129630450 is about 506.0992296031.

The spelling of 129630450 in words is "one hundred twenty-nine million, six hundred thirty thousand, four hundred fifty".