285940004 has 24 divisors (see below), whose sum is σ = 579938688. Its totient is φ = 120818880.

The previous prime is 285939943. The next prime is 285940009. The reversal of 285940004 is 400049582.

It is not an unprimeable number, because it can be changed into a prime (285940009) 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, 69929 + ... + 73904.

It is an arithmetic number, because the mean of its divisors is an integer number (24164112).

Almost surely, 2^285940004 is an apocalyptic number.

It is an amenable number.

285940004 is an abundant number, since it is smaller than the sum of its proper divisors (293998684).

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

285940004 is a wasteful number, since it uses less digits than its factorization.

285940004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143915 (or 143913 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 285940004 is about 16909.7606133263. The cubic root of 285940004 is about 658.8071536502.

Adding to 285940004 its reverse (400049582), we get a palindrome (685989586).

The spelling of 285940004 in words is "two hundred eighty-five million, nine hundred forty thousand, four".