391232068 has 24 divisors (see below), whose sum is σ = 700761600. Its totient is φ = 191057568.

The previous prime is 391232063. The next prime is 391232071. The reversal of 391232068 is 860232193.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (391232063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31773 + ... + 42331.

It is an arithmetic number, because the mean of its divisors is an integer number (29198400).

Almost surely, 2^391232068 is an apocalyptic number.

It is an amenable number.

391232068 is a deficient number, since it is larger than the sum of its proper divisors (309529532).

391232068 is a wasteful number, since it uses less digits than its factorization.

391232068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779 (or 10777 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 391232068 is about 19779.5871544378. The cubic root of 391232068 is about 731.3829217740.

The spelling of 391232068 in words is "three hundred ninety-one million, two hundred thirty-two thousand, sixty-eight".