85519420 has 48 divisors (see below), whose sum is σ = 206857728. Its totient is φ = 29090880.

The previous prime is 85519411. The next prime is 85519439. The reversal of 85519420 is 2491558.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16009 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (4309536).

Almost surely, 2^85519420 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 85519420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103428864).

85519420 is an abundant number, since it is smaller than the sum of its proper divisors (121338308).

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

85519420 is a wasteful number, since it uses less digits than its factorization.

85519420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 85519420 is about 9247.6710581638. The cubic root of 85519420 is about 440.5767574230.

It can be divided in two parts, 8551 and 9420, that added together give a palindrome (17971).

The spelling of 85519420 in words is "eighty-five million, five hundred nineteen thousand, four hundred twenty".