286806145 has 4 divisors (see below), whose sum is σ = 344167380. Its totient is φ = 229444912.

The previous prime is 286806137. The next prime is 286806211. The reversal of 286806145 is 541608682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192016449 + 94789696 = 13857^2 + 9736^2 .

It is a cyclic number.

It is not a de Polignac number, because 286806145 - 2³ = 286806137 is a prime.

It is a super-2 number, since 2×286806145² = 164515529619522050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 286806098 and 286806107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28680610 + ... + 28680619.

It is an arithmetic number, because the mean of its divisors is an integer number (86041845).

Almost surely, 2^286806145 is an apocalyptic number.

It is an amenable number.

286806145 is a deficient number, since it is larger than the sum of its proper divisors (57361235).

286806145 is an equidigital number, since it uses as much as digits as its factorization.

286806145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57361234.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 286806145 is about 16935.3519302080. The cubic root of 286806145 is about 659.4716808139.

The spelling of 286806145 in words is "two hundred eighty-six million, eight hundred six thousand, one hundred forty-five".