85032440 has 64 divisors (see below), whose sum is σ = 196992000. Its totient is φ = 33022080.

The previous prime is 85032439. The next prime is 85032461. The reversal of 85032440 is 4423058.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224171 + ... + 224549.

It is an arithmetic number, because the mean of its divisors is an integer number (3078000).

Almost surely, 2^85032440 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 85032440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98496000).

85032440 is an abundant number, since it is smaller than the sum of its proper divisors (111959560).

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

85032440 is a wasteful number, since it uses less digits than its factorization.

85032440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 85032440 is about 9221.3035954793. The cubic root of 85032440 is about 439.7388946720.

Adding to 85032440 its reverse (4423058), we get a palindrome (89455498).

The spelling of 85032440 in words is "eighty-five million, thirty-two thousand, four hundred forty".