126168728 has 48 divisors (see below), whose sum is σ = 276253920. Its totient is φ = 53863488.

The previous prime is 126168709. The next prime is 126168733. The reversal of 126168728 is 827861621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143426 + ... + 144302.

It is an arithmetic number, because the mean of its divisors is an integer number (5755290).

Almost surely, 2^126168728 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 126168728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138126960).

126168728 is an abundant number, since it is smaller than the sum of its proper divisors (150085192).

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

126168728 is a wasteful number, since it uses less digits than its factorization.

126168728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1253 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 126168728 is about 11232.4853883724. The cubic root of 126168728 is about 501.5534724481.

The spelling of 126168728 in words is "one hundred twenty-six million, one hundred sixty-eight thousand, seven hundred twenty-eight".