29812128 has 48 divisors (see below), whose sum is σ = 78545376. Its totient is φ = 9900800.

The previous prime is 29812127. The next prime is 29812157. The reversal of 29812128 is 82121892.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29812127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42178 + ... + 42878.

It is an arithmetic number, because the mean of its divisors is an integer number (1636362).

Almost surely, 2^29812128 is an apocalyptic number.

It is an amenable number.

29812128 is an abundant number, since it is smaller than the sum of its proper divisors (48733248).

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

29812128 is a wasteful number, since it uses less digits than its factorization.

29812128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1149 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 29812128 is about 5460.0483514343. The cubic root of 29812128 is about 310.0732674549.

The spelling of 29812128 in words is "twenty-nine million, eight hundred twelve thousand, one hundred twenty-eight".