34168728 has 64 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 9994880.

The previous prime is 34168681. The next prime is 34168741. The reversal of 34168728 is 82786143.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5425 + ... + 9887.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^34168728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34168728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48211200).

34168728 is an abundant number, since it is smaller than the sum of its proper divisors (62253672).

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

34168728 is a wasteful number, since it uses less digits than its factorization.

34168728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512 (or 4508 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 34168728 is about 5845.4022958219. The cubic root of 34168728 is about 324.4961914015.

The spelling of 34168728 in words is "thirty-four million, one hundred sixty-eight thousand, seven hundred twenty-eight".