85219428 has 36 divisors (see below), whose sum is σ = 231311472. Its totient is φ = 24348240.

The previous prime is 85219411. The next prime is 85219441. The reversal of 85219428 is 82491258.

It is a zygodrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71878 + ... + 73053.

Almost surely, 2^85219428 is an apocalyptic number.

It is an amenable number.

85219428 is an abundant number, since it is smaller than the sum of its proper divisors (146092044).

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

85219428 is a wasteful number, since it uses less digits than its factorization.

85219428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144952 (or 144943 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 85219428 is about 9231.4369412351. The cubic root of 85219428 is about 440.0609901681.

The spelling of 85219428 in words is "eighty-five million, two hundred nineteen thousand, four hundred twenty-eight".