85218156 has 72 divisors (see below), whose sum is σ = 226639504. Its totient is φ = 27993600.

The previous prime is 85218149. The next prime is 85218157. The reversal of 85218156 is 65181258.

85218156 is a `hidden beast` number, since 8 + 521 + 81 + 56 = 666.

It is a super-2 number, since 2×85218156² = 14524268224080672, which contains 22 as substring.

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 85218156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85218157) 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, 70356 + ... + 71556.

Almost surely, 2^85218156 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 85218156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113319752).

85218156 is an abundant number, since it is smaller than the sum of its proper divisors (141421348).

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

85218156 is a wasteful number, since it uses less digits than its factorization.

85218156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1279 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 85218156 is about 9231.3680459616. The cubic root of 85218156 is about 440.0588006816.

The spelling of 85218156 in words is "eighty-five million, two hundred eighteen thousand, one hundred fifty-six".