68890472 has 96 divisors (see below), whose sum is σ = 158605920. Its totient is φ = 27941760.

The previous prime is 68890441. The next prime is 68890517. The reversal of 68890472 is 27409886.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028183 + ... + 1028249.

It is an arithmetic number, because the mean of its divisors is an integer number (1652145).

Almost surely, 2^68890472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68890472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79302960).

68890472 is an abundant number, since it is smaller than the sum of its proper divisors (89715448).

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

68890472 is a wasteful number, since it uses less digits than its factorization.

68890472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 68890472 is about 8300.0284336862. The cubic root of 68890472 is about 409.9394556643.

The spelling of 68890472 in words is "sixty-eight million, eight hundred ninety thousand, four hundred seventy-two".