129487248 has 200 divisors, whose sum is σ = 423472896. Its totient is φ = 37843200.

The previous prime is 129487247. The next prime is 129487271. The reversal of 129487248 is 842784921.

129487248 is a `hidden beast` number, since 129 + 487 + 2 + 48 = 666.

It is a super-2 number, since 2×129487248² = 33533894789227008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129487247) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 441790 + ... + 442082.

Almost surely, 2^129487248 is an apocalyptic number.

129487248 is a gapful number since it is divisible by the number (18) 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 129487248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211736448).

129487248 is an abundant number, since it is smaller than the sum of its proper divisors (293985648).

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

129487248 is a wasteful number, since it uses less digits than its factorization.

129487248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 340 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 129487248 is about 11379.2463722340. The cubic root of 129487248 is about 505.9127993171.

The spelling of 129487248 in words is "one hundred twenty-nine million, four hundred eighty-seven thousand, two hundred forty-eight".