285408080 has 20 divisors (see below), whose sum is σ = 663573972. Its totient is φ = 114163200.

The previous prime is 285408049. The next prime is 285408083. The reversal of 285408080 is 80804582.

It can be written as a sum of positive squares in 2 ways, for example, as 30558784 + 254849296 = 5528^2 + 15964^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 285408080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285408083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783721 + ... + 1783880.

Almost surely, 2^285408080 is an apocalyptic number.

285408080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285408080 is an abundant number, since it is smaller than the sum of its proper divisors (378165892).

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

285408080 is a wasteful number, since it uses less digits than its factorization.

285408080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567614 (or 3567608 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 35.

The square root of 285408080 is about 16894.0249792641. The cubic root of 285408080 is about 658.3983815802.

The spelling of 285408080 in words is "two hundred eighty-five million, four hundred eight thousand, eighty".