129070860 has 48 divisors (see below), whose sum is σ = 364615776. Its totient is φ = 34112512.

The previous prime is 129070811. The next prime is 129070889. The reversal of 129070860 is 68070921.

It is a super-2 number, since 2×129070860² = 33318573802279200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2739 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (7596162).

Almost surely, 2^129070860 is an apocalyptic number.

129070860 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 129070860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182307888).

129070860 is an abundant number, since it is smaller than the sum of its proper divisors (235544916).

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

129070860 is a wasteful number, since it uses less digits than its factorization.

129070860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19162 (or 19160 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 129070860 is about 11360.9357009007. The cubic root of 129070860 is about 505.3699344761.

The spelling of 129070860 in words is "one hundred twenty-nine million, seventy thousand, eight hundred sixty".