31428068 has 12 divisors (see below), whose sum is σ = 62856192. Its totient is φ = 13469160.

The previous prime is 31428049. The next prime is 31428073. The reversal of 31428068 is 86082413.

31428068 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561188 + ... + 561243.

It is an arithmetic number, because the mean of its divisors is an integer number (5238016).

Almost surely, 2^31428068 is an apocalyptic number.

It is an amenable number.

31428068 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31428068 is a wasteful number, since it uses less digits than its factorization.

31428068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122442 (or 1122440 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 31428068 is about 5606.0742057165. The cubic root of 31428068 is about 315.5774006970.

It can be divided in two parts, 314 and 28068, that added together give a palindrome (28382).

The spelling of 31428068 in words is "thirty-one million, four hundred twenty-eight thousand, sixty-eight".