68304156 has 24 divisors (see below), whose sum is σ = 160634880. Its totient is φ = 22588272.

The previous prime is 68304149. The next prime is 68304157. The reversal of 68304156 is 65140386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68304157) 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 7 ways as a sum of consecutive naturals, for example, 20886 + ... + 23933.

It is an arithmetic number, because the mean of its divisors is an integer number (6693120).

Almost surely, 2^68304156 is an apocalyptic number.

It is an amenable number.

68304156 is an abundant number, since it is smaller than the sum of its proper divisors (92330724).

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

68304156 is a wasteful number, since it uses less digits than its factorization.

68304156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44953 (or 44951 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 68304156 is about 8264.6328412096. The cubic root of 68304156 is about 408.7731638717.

The spelling of 68304156 in words is "sixty-eight million, three hundred four thousand, one hundred fifty-six".