285940518 has 16 divisors (see below), whose sum is σ = 572049840. Its totient is φ = 95285376.

The previous prime is 285940517. The next prime is 285940537. The reversal of 285940518 is 815049582.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 285940518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285940517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29946 + ... + 38322.

It is an arithmetic number, because the mean of its divisors is an integer number (35753115).

Almost surely, 2^285940518 is an apocalyptic number.

285940518 is an abundant number, since it is smaller than the sum of its proper divisors (286109322).

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

285940518 is a wasteful number, since it uses less digits than its factorization.

285940518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14071.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 285940518 is about 16909.7758116422. The cubic root of 285940518 is about 658.8075484028.

The spelling of 285940518 in words is "two hundred eighty-five million, nine hundred forty thousand, five hundred eighteen".