285820430 has 72 divisors (see below), whose sum is σ = 615193704. Its totient is φ = 95329920.

The previous prime is 285820427. The next prime is 285820463. The reversal of 285820430 is 34028582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 823517 + ... + 823863.

It is an arithmetic number, because the mean of its divisors is an integer number (8544357).

Almost surely, 2^285820430 is an apocalyptic number.

285820430 is an abundant number, since it is smaller than the sum of its proper divisors (329373274).

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

285820430 is a wasteful number, since it uses less digits than its factorization.

285820430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 285820430 is about 16906.2245933266. The cubic root of 285820430 is about 658.7153078214.

The spelling of 285820430 in words is "two hundred eighty-five million, eight hundred twenty thousand, four hundred thirty".