129458028 has 48 divisors (see below), whose sum is σ = 345949184. Its totient is φ = 36910080.

The previous prime is 129457997. The next prime is 129458029. The reversal of 129458028 is 820854921.

It is not an unprimeable number, because it can be changed into a prime (129458029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47133 + ... + 49803.

Almost surely, 2^129458028 is an apocalyptic number.

It is an amenable number.

129458028 is an abundant number, since it is smaller than the sum of its proper divisors (216491156).

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

129458028 is a wasteful number, since it uses less digits than its factorization.

129458028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 129458028 is about 11377.9623834850. The cubic root of 129458028 is about 505.8747418138.

The spelling of 129458028 in words is "one hundred twenty-nine million, four hundred fifty-eight thousand, twenty-eight".