129190880 has 192 divisors, whose sum is σ = 396264960. Its totient is φ = 38651904.

The previous prime is 129190843. The next prime is 129190883. The reversal of 129190880 is 88091921.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129190883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276407 + ... + 276873.

It is an arithmetic number, because the mean of its divisors is an integer number (2063880).

Almost surely, 2^129190880 is an apocalyptic number.

129190880 is a gapful number since it is divisible by the number (10) 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 129190880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198132480).

129190880 is an abundant number, since it is smaller than the sum of its proper divisors (267074080).

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

129190880 is a wasteful number, since it uses less digits than its factorization.

129190880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 129190880 is about 11366.2166088809. The cubic root of 129190880 is about 505.5265298761.

The spelling of 129190880 in words is "one hundred twenty-nine million, one hundred ninety thousand, eight hundred eighty".