68230440 has 48 divisors (see below), whose sum is σ = 221750100. Its totient is φ = 18194688.

The previous prime is 68230439. The next prime is 68230457. The reversal of 68230440 is 4403286.

It can be written as a sum of positive squares in 2 ways, for example, as 62441604 + 5788836 = 7902^2 + 2406^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94405 + ... + 95124.

Almost surely, 2^68230440 is an apocalyptic number.

68230440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68230440 is an abundant number, since it is smaller than the sum of its proper divisors (153519660).

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

68230440 is a wasteful number, since it uses less digits than its factorization.

68230440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189546 (or 189539 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 68230440 is about 8260.1719110440. The cubic root of 68230440 is about 408.6260573068.

The spelling of 68230440 in words is "sixty-eight million, two hundred thirty thousand, four hundred forty".