129152890 has 16 divisors (see below), whose sum is σ = 233183520. Its totient is φ = 51503760.

The previous prime is 129152879. The next prime is 129152917. The reversal of 129152890 is 98251921.

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, 16200 + ... + 22819.

It is an arithmetic number, because the mean of its divisors is an integer number (14573970).

Almost surely, 2^129152890 is an apocalyptic number.

129152890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129152890 is a deficient number, since it is larger than the sum of its proper divisors (104030630).

129152890 is a wasteful number, since it uses less digits than its factorization.

129152890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39357.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 129152890 is about 11364.5453054665. The cubic root of 129152890 is about 505.4769731384.

The spelling of 129152890 in words is "one hundred twenty-nine million, one hundred fifty-two thousand, eight hundred ninety".