29439018 has 64 divisors (see below), whose sum is σ = 78720000. Its totient is φ = 7966512.

The previous prime is 29438989. The next prime is 29439043. The reversal of 29439018 is 81093492.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5133 + ... + 9231.

It is an arithmetic number, because the mean of its divisors is an integer number (1230000).

Almost surely, 2^29439018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29439018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39360000).

29439018 is an abundant number, since it is smaller than the sum of its proper divisors (49280982).

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

29439018 is a wasteful number, since it uses less digits than its factorization.

29439018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136 (or 4130 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 29439018 is about 5425.7734932450. The cubic root of 29439018 is about 308.7742719422.

The spelling of 29439018 in words is "twenty-nine million, four hundred thirty-nine thousand, eighteen".