68193730 has 32 divisors (see below), whose sum is σ = 136116288. Its totient is φ = 24388800.

The previous prime is 68193721. The next prime is 68193731. The reversal of 68193730 is 3739186.

It is a super-2 number, since 2×68193730² = 9300769622625800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68193730.

It is not an unprimeable number, because it can be changed into a prime (68193731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1629 + ... + 11791.

It is an arithmetic number, because the mean of its divisors is an integer number (4253634).

Almost surely, 2^68193730 is an apocalyptic number.

68193730 is a deficient number, since it is larger than the sum of its proper divisors (67922558).

68193730 is a wasteful number, since it uses less digits than its factorization.

68193730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 68193730 is about 8257.9495033574. The cubic root of 68193730 is about 408.5527598478.

The spelling of 68193730 in words is "sixty-eight million, one hundred ninety-three thousand, seven hundred thirty".