68138294 has 32 divisors (see below), whose sum is σ = 123985920. Its totient is φ = 27433728.

The previous prime is 68138293. The next prime is 68138309. The reversal of 68138294 is 49283186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68138293) 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, 32774 + ... + 34790.

It is an arithmetic number, because the mean of its divisors is an integer number (3874560).

Almost surely, 2^68138294 is an apocalyptic number.

68138294 is a deficient number, since it is larger than the sum of its proper divisors (55847626).

68138294 is a wasteful number, since it uses less digits than its factorization.

68138294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172.

The product of its digits is 82944, while the sum is 41.

The square root of 68138294 is about 8254.5922976244. The cubic root of 68138294 is about 408.4420230264.

The spelling of 68138294 in words is "sixty-eight million, one hundred thirty-eight thousand, two hundred ninety-four".