129889152 has 96 divisors (see below), whose sum is σ = 376955280. Its totient is φ = 42928128.

The previous prime is 129889147. The next prime is 129889157. The reversal of 129889152 is 251988921.

It is an interprime number because it is at equal distance from previous prime (129889147) and next prime (129889157).

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 129889098 and 129889107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129889157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157413 + ... + 158235.

Almost surely, 2^129889152 is an apocalyptic number.

129889152 is a gapful number since it is divisible by the number (12) 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 129889152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188477640).

129889152 is an abundant number, since it is smaller than the sum of its proper divisors (247066128).

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

129889152 is a wasteful number, since it uses less digits than its factorization.

129889152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 965 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 129889152 is about 11396.8922079662. The cubic root of 129889152 is about 506.4356780265.

The spelling of 129889152 in words is "one hundred twenty-nine million, eight hundred eighty-nine thousand, one hundred fifty-two".