129250464 has 192 divisors, whose sum is σ = 418037760. Its totient is φ = 34145280.

The previous prime is 129250453. The next prime is 129250489. The reversal of 129250464 is 464052921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 676609 + ... + 676799.

It is an arithmetic number, because the mean of its divisors is an integer number (2177280).

Almost surely, 2^129250464 is an apocalyptic number.

129250464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129250464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209018880).

129250464 is an abundant number, since it is smaller than the sum of its proper divisors (288787296).

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

129250464 is a wasteful number, since it uses less digits than its factorization.

129250464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 129250464 is about 11368.8374075804. The cubic root of 129250464 is about 505.6042357307.

The spelling of 129250464 in words is "one hundred twenty-nine million, two hundred fifty thousand, four hundred sixty-four".