85010240 has 56 divisors (see below), whose sum is σ = 231355392. Its totient is φ = 29145600.

The previous prime is 85010221. The next prime is 85010243. The reversal of 85010240 is 4201058.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85010243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16736 + ... + 21215.

Almost surely, 2^85010240 is an apocalyptic number.

85010240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85010240 is an abundant number, since it is smaller than the sum of its proper divisors (146345152).

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

85010240 is a wasteful number, since it uses less digits than its factorization.

85010240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37975 (or 37965 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 85010240 is about 9220.0997825403. The cubic root of 85010240 is about 439.7006227954.

Adding to 85010240 its reverse (4201058), we get a palindrome (89211298).

The spelling of 85010240 in words is "eighty-five million, ten thousand, two hundred forty".