78571422 has 48 divisors (see below), whose sum is σ = 185003520. Its totient is φ = 24008400.

The previous prime is 78571393. The next prime is 78571439. The reversal of 78571422 is 22417587.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6897 + ... + 14307.

It is an arithmetic number, because the mean of its divisors is an integer number (3854240).

Almost surely, 2^78571422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78571422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92501760).

78571422 is an abundant number, since it is smaller than the sum of its proper divisors (106432098).

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

78571422 is a wasteful number, since it uses less digits than its factorization.

78571422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7469 (or 7466 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 78571422 is about 8864.0522336006. The cubic root of 78571422 is about 428.3067028954.

The spelling of 78571422 in words is "seventy-eight million, five hundred seventy-one thousand, four hundred twenty-two".