285398384 has 10 divisors (see below), whose sum is σ = 552959400. Its totient is φ = 142699184.

The previous prime is 285398383. The next prime is 285398401. The reversal of 285398384 is 483893582.

It is a super-2 number, since 2×285398384² = 162904475179622912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285398381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8918684 + ... + 8918715.

It is an arithmetic number, because the mean of its divisors is an integer number (55295940).

Almost surely, 2^285398384 is an apocalyptic number.

It is an amenable number.

285398384 is a deficient number, since it is larger than the sum of its proper divisors (267561016).

285398384 is a wasteful number, since it uses less digits than its factorization.

285398384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17837407 (or 17837401 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 285398384 is about 16893.7380114645. The cubic root of 285398384 is about 658.3909257027.

The spelling of 285398384 in words is "two hundred eighty-five million, three hundred ninety-eight thousand, three hundred eighty-four".