68933240 has 32 divisors (see below), whose sum is σ = 157734000. Its totient is φ = 27105024.

The previous prime is 68933239. The next prime is 68933251. The reversal of 68933240 is 4233986.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68933240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12245 + ... + 16964.

Almost surely, 2^68933240 is an apocalyptic number.

It is an amenable number.

68933240 is an abundant number, since it is smaller than the sum of its proper divisors (88800760).

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

68933240 is a wasteful number, since it uses less digits than its factorization.

68933240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29279 (or 29275 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 68933240 is about 8302.6044106654. The cubic root of 68933240 is about 410.0242698304.

The spelling of 68933240 in words is "sixty-eight million, nine hundred thirty-three thousand, two hundred forty".