129850896 has 160 divisors (see below), whose sum is σ = 411402240. Its totient is φ = 34449408.

The previous prime is 129850849. The next prime is 129850949. The reversal of 129850896 is 698058921.

It is a happy number.

It is a super-2 number, since 2×129850896² = 33722510384005632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 725335 + ... + 725513.

It is an arithmetic number, because the mean of its divisors is an integer number (2571264).

Almost surely, 2^129850896 is an apocalyptic number.

129850896 is a gapful number since it is divisible by the number (16) 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 129850896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205701120).

129850896 is an abundant number, since it is smaller than the sum of its proper divisors (281551344).

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

129850896 is a wasteful number, since it uses less digits than its factorization.

129850896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 129850896 is about 11395.2137320895. The cubic root of 129850896 is about 506.3859533051.

The spelling of 129850896 in words is "one hundred twenty-nine million, eight hundred fifty thousand, eight hundred ninety-six".