285000019 has 16 divisors (see below), whose sum is σ = 327905280. Its totient is φ = 245911680.

The previous prime is 285000013. The next prime is 285000119. The reversal of 285000019 is 910000582.

It is not a de Polignac number, because 285000019 - 2⁵ = 284999987 is a prime.

It is a super-2 number, since 2×285000019² = 162450021660000722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 284999957 and 285000002.

It is not an unprimeable number, because it can be changed into a prime (285000013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4219 + ... + 24244.

It is an arithmetic number, because the mean of its divisors is an integer number (20494080).

Almost surely, 2^285000019 is an apocalyptic number.

285000019 is a deficient number, since it is larger than the sum of its proper divisors (42905261).

285000019 is a wasteful number, since it uses less digits than its factorization.

285000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28530.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 285000019 is about 16881.9435788656. The cubic root of 285000019 is about 658.0844511482.

The spelling of 285000019 in words is "two hundred eighty-five million, nineteen", and thus it is an aban number.