68528428 has 12 divisors (see below), whose sum is σ = 126979272. Its totient is φ = 32248640.

The previous prime is 68528423. The next prime is 68528429. The reversal of 68528428 is 82482586.

It is a super-2 number, since 2×68528428² = 9392290888302368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68528423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503818 + ... + 503953.

It is an arithmetic number, because the mean of its divisors is an integer number (10581606).

Almost surely, 2^68528428 is an apocalyptic number.

68528428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68528428 is a deficient number, since it is larger than the sum of its proper divisors (58450844).

68528428 is a wasteful number, since it uses less digits than its factorization.

68528428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007792 (or 1007790 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 68528428 is about 8278.1898987641. The cubic root of 68528428 is about 409.2200679612.

The spelling of 68528428 in words is "sixty-eight million, five hundred twenty-eight thousand, four hundred twenty-eight".