85402836 has 72 divisors (see below), whose sum is σ = 229442304. Its totient is φ = 27760320.

The previous prime is 85402831. The next prime is 85402843. The reversal of 85402836 is 63820458.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 85402836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85402831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38781 + ... + 40923.

Almost surely, 2^85402836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85402836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114721152).

85402836 is an abundant number, since it is smaller than the sum of its proper divisors (144039468).

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

85402836 is a wasteful number, since it uses less digits than its factorization.

85402836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 85402836 is about 9241.3654835203. The cubic root of 85402836 is about 440.3764615563.

The spelling of 85402836 in words is "eighty-five million, four hundred two thousand, eight hundred thirty-six".