68808438 has 24 divisors (see below), whose sum is σ = 149374368. Its totient is φ = 22891632.

The previous prime is 68808407. The next prime is 68808451. The reversal of 68808438 is 83480886.

It is a super-2 number, since 2×68808438² = 9469202279999688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68808393 and 68808402.

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, 6595 + ... + 13457.

It is an arithmetic number, because the mean of its divisors is an integer number (6223932).

Almost surely, 2^68808438 is an apocalyptic number.

68808438 is an abundant number, since it is smaller than the sum of its proper divisors (80565930).

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

68808438 is a wasteful number, since it uses less digits than its factorization.

68808438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7428 (or 7425 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 68808438 is about 8295.0851713530. The cubic root of 68808438 is about 409.7766739351.

The spelling of 68808438 in words is "sixty-eight million, eight hundred eight thousand, four hundred thirty-eight".