129272760 has 160 divisors (see below), whose sum is σ = 460254960. Its totient is φ = 32431104.

The previous prime is 129272747. The next prime is 129272771. The reversal of 129272760 is 67272921.

It is a super-2 number, since 2×129272760² = 33422892956035200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 53907 + ... + 56253.

Almost surely, 2^129272760 is an apocalyptic number.

129272760 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 129272760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230127480).

129272760 is an abundant number, since it is smaller than the sum of its proper divisors (330982200).

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

129272760 is a wasteful number, since it uses less digits than its factorization.

129272760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387 (or 2374 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 129272760 is about 11369.8179404949. The cubic root of 129272760 is about 505.6333066873.

The spelling of 129272760 in words is "one hundred twenty-nine million, two hundred seventy-two thousand, seven hundred sixty".