85164028 has 6 divisors (see below), whose sum is σ = 149037056. Its totient is φ = 42582012.

The previous prime is 85164019. The next prime is 85164029. The reversal of 85164028 is 82046158.

It is a junction number, because it is equal to n+sod(n) for n = 85163984 and 85164002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85164029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10645500 + ... + 10645507.

Almost surely, 2^85164028 is an apocalyptic number.

It is an amenable number.

85164028 is a deficient number, since it is larger than the sum of its proper divisors (63873028).

85164028 is a wasteful number, since it uses less digits than its factorization.

85164028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21291011 (or 21291009 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 85164028 is about 9228.4358371286. The cubic root of 85164028 is about 439.9656102599.

It can be divided in two parts, 8516 and 4028, that added together give a square (12544 = 112²).

The spelling of 85164028 in words is "eighty-five million, one hundred sixty-four thousand, twenty-eight".