85428436 has 12 divisors (see below), whose sum is σ = 154322560. Its totient is φ = 41336280.

The previous prime is 85428391. The next prime is 85428443. The reversal of 85428436 is 63482458.

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, 344346 + ... + 344593.

Almost surely, 2^85428436 is an apocalyptic number.

It is an amenable number.

85428436 is a deficient number, since it is larger than the sum of its proper divisors (68894124).

85428436 is a wasteful number, since it uses less digits than its factorization.

85428436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688974 (or 688972 counting only the distinct ones).

The product of its digits is 184320, while the sum is 40.

The square root of 85428436 is about 9242.7504564388. The cubic root of 85428436 is about 440.4204589678.

The spelling of 85428436 in words is "eighty-five million, four hundred twenty-eight thousand, four hundred thirty-six".