285041520 has 60 divisors (see below), whose sum is σ = 957266856. Its totient is φ = 76010880.

The previous prime is 285041513. The next prime is 285041521. The reversal of 285041520 is 25140582.

It is a happy number.

285041520 is a `hidden beast` number, since 2 + 8 + 504 + 152 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285041521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197226 + ... + 198665.

Almost surely, 2^285041520 is an apocalyptic number.

285041520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

285041520 is an abundant number, since it is smaller than the sum of its proper divisors (672225336).

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

285041520 is a wasteful number, since it uses less digits than its factorization.

285041520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395910 (or 395901 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 285041520 is about 16883.1726876201. The cubic root of 285041520 is about 658.1163924762.

The spelling of 285041520 in words is "two hundred eighty-five million, forty-one thousand, five hundred twenty".