85547280 has 160 divisors (see below), whose sum is σ = 326479104. Its totient is φ = 18044928.

The previous prime is 85547269. The next prime is 85547299. The reversal of 85547280 is 8274558.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19882 + ... + 23798.

Almost surely, 2^85547280 is an apocalyptic number.

85547280 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 85547280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163239552).

85547280 is an abundant number, since it is smaller than the sum of its proper divisors (240931824).

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

85547280 is a wasteful number, since it uses less digits than its factorization.

85547280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 85547280 is about 9249.1772607081. The cubic root of 85547280 is about 440.6245950401.

The spelling of 85547280 in words is "eighty-five million, five hundred forty-seven thousand, two hundred eighty".