85247028 has 18 divisors (see below), whose sum is σ = 215485634. Its totient is φ = 28415664.

The previous prime is 85246999. The next prime is 85247033. The reversal of 85247028 is 82074258.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64834704 + 20412324 = 8052^2 + 4518^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2367973 = 85247028 / (8 + 5 + 2 + 4 + 7 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 85246983 and 85247001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1183951 + ... + 1184022.

Almost surely, 2^85247028 is an apocalyptic number.

It is an amenable number.

85247028 is an abundant number, since it is smaller than the sum of its proper divisors (130238606).

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

85247028 is a wasteful number, since it uses less digits than its factorization.

85247028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367983 (or 2367978 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 85247028 is about 9232.9317120837. The cubic root of 85247028 is about 440.1084925301.

The spelling of 85247028 in words is "eighty-five million, two hundred forty-seven thousand, twenty-eight".