129527870 has 16 divisors (see below), whose sum is σ = 233394480. Its totient is φ = 51756864.

The previous prime is 129527869. The next prime is 129527899. The reversal of 129527870 is 78725921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4061 + ... + 16599.

It is an arithmetic number, because the mean of its divisors is an integer number (14587155).

Almost surely, 2^129527870 is an apocalyptic number.

129527870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129527870 is a deficient number, since it is larger than the sum of its proper divisors (103866610).

129527870 is a wasteful number, since it uses less digits than its factorization.

129527870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 129527870 is about 11381.0311483626. The cubic root of 129527870 is about 505.9656978106.

The spelling of 129527870 in words is "one hundred twenty-nine million, five hundred twenty-seven thousand, eight hundred seventy".