286270028 has 36 divisors (see below), whose sum is σ = 554444016. Its totient is φ = 129228000.

The previous prime is 286270003. The next prime is 286270031. The reversal of 286270028 is 820072682.

It is a super-2 number, since 2×286270028² = 163901057862241568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 286270028.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71126 + ... + 75042.

Almost surely, 2^286270028 is an apocalyptic number.

It is an amenable number.

286270028 is a deficient number, since it is larger than the sum of its proper divisors (268173988).

286270028 is a wasteful number, since it uses less digits than its factorization.

286270028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094 (or 4081 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 286270028 is about 16919.5161869363. The cubic root of 286270028 is about 659.0605151656.

The spelling of 286270028 in words is "two hundred eighty-six million, two hundred seventy thousand, twenty-eight".