85002400 has 144 divisors (see below), whose sum is σ = 243359424. Its totient is φ = 28385280.

The previous prime is 85002391. The next prime is 85002413. The reversal of 85002400 is 420058.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240624 + ... + 240976.

It is an arithmetic number, because the mean of its divisors is an integer number (1689996).

Almost surely, 2^85002400 is an apocalyptic number.

85002400 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85002400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121679712).

85002400 is an abundant number, since it is smaller than the sum of its proper divisors (158357024).

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

85002400 is a wasteful number, since it uses less digits than its factorization.

85002400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 85002400 is about 9219.6746146488. The cubic root of 85002400 is about 439.6871053695.

Adding to 85002400 its reverse (420058), we get a palindrome (85422458).

The spelling of 85002400 in words is "eighty-five million, two thousand, four hundred".