85232040 has 64 divisors (see below), whose sum is σ = 259536960. Its totient is φ = 22387200.

The previous prime is 85232039. The next prime is 85232047. The reversal of 85232040 is 4023258.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 85232040.

It is not an unprimeable number, because it can be changed into a prime (85232047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2740 + ... + 13340.

It is an arithmetic number, because the mean of its divisors is an integer number (4055265).

Almost surely, 2^85232040 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 85232040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129768480).

85232040 is an abundant number, since it is smaller than the sum of its proper divisors (174304920).

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

85232040 is a wasteful number, since it uses less digits than its factorization.

85232040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10682 (or 10678 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 85232040 is about 9232.1200165509. The cubic root of 85232040 is about 440.0826979546.

Adding to 85232040 its reverse (4023258), we get a palindrome (89255298).

The spelling of 85232040 in words is "eighty-five million, two hundred thirty-two thousand, forty".