68238780 has 24 divisors (see below), whose sum is σ = 191068752. Its totient is φ = 18196992.

The previous prime is 68238757. The next prime is 68238811. The reversal of 68238780 is 8783286.

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 7 ways as a sum of consecutive naturals, for example, 568597 + ... + 568716.

It is an arithmetic number, because the mean of its divisors is an integer number (7961198).

Almost surely, 2^68238780 is an apocalyptic number.

68238780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68238780 is an abundant number, since it is smaller than the sum of its proper divisors (122829972).

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

68238780 is a wasteful number, since it uses less digits than its factorization.

68238780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137325 (or 1137323 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 68238780 is about 8260.6767277264. The cubic root of 68238780 is about 408.6427058021.

The spelling of 68238780 in words is "sixty-eight million, two hundred thirty-eight thousand, seven hundred eighty".