85508480 has 128 divisors (see below), whose sum is σ = 220466880. Its totient is φ = 31629312.

The previous prime is 85508473. The next prime is 85508483. The reversal of 85508480 is 8480558.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85508483) 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, 544562 + ... + 544718.

Almost surely, 2^85508480 is an apocalyptic number.

85508480 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 85508480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110233440).

85508480 is an abundant number, since it is smaller than the sum of its proper divisors (134958400).

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

85508480 is a wasteful number, since it uses less digits than its factorization.

85508480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 85508480 is about 9247.0795389680. The cubic root of 85508480 is about 440.5579698180.

The spelling of 85508480 in words is "eighty-five million, five hundred eight thousand, four hundred eighty".