129284834 has 24 divisors (see below), whose sum is σ = 226048320. Its totient is φ = 55295016.

The previous prime is 129284833. The next prime is 129284893. The reversal of 129284834 is 438482921.

It is a junction number, because it is equal to n+sod(n) for n = 129284791 and 129284800.

It is not an unprimeable number, because it can be changed into a prime (129284833) 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, 62387 + ... + 64425.

It is an arithmetic number, because the mean of its divisors is an integer number (9418680).

Almost surely, 2^129284834 is an apocalyptic number.

129284834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129284834 is a deficient number, since it is larger than the sum of its proper divisors (96763486).

129284834 is a wasteful number, since it uses less digits than its factorization.

129284834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2695 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 129284834 is about 11370.3488952626. The cubic root of 129284834 is about 505.6490481487.

The spelling of 129284834 in words is "one hundred twenty-nine million, two hundred eighty-four thousand, eight hundred thirty-four".