85341780 has 72 divisors (see below), whose sum is σ = 267813000. Its totient is φ = 21971712.

The previous prime is 85341743. The next prime is 85341793. The reversal of 85341780 is 8714358.

It can be written as a sum of positive squares in 4 ways, for example, as 1838736 + 83503044 = 1356^2 + 9138^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2955 + ... + 13394.

It is an arithmetic number, because the mean of its divisors is an integer number (3719625).

Almost surely, 2^85341780 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 85341780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133906500).

85341780 is an abundant number, since it is smaller than the sum of its proper divisors (182471220).

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

85341780 is a wasteful number, since it uses less digits than its factorization.

85341780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16393 (or 16388 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 85341780 is about 9238.0614849653. The cubic root of 85341780 is about 440.2714922269.

The spelling of 85341780 in words is "eighty-five million, three hundred forty-one thousand, seven hundred eighty".