286226738 has 18 divisors (see below), whose sum is σ = 499728861. Its totient is φ = 122596824.

The previous prime is 286226737. The next prime is 286226741. The reversal of 286226738 is 837622682.

It can be written as a sum of positive squares in 2 ways, for example, as 254945089 + 31281649 = 15967^2 + 5593^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11963.

It is a super-2 number, since 2×286226738² = 163851491092241288, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (286226737) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 166628 + ... + 168336.

Almost surely, 2^286226738 is an apocalyptic number.

286226738 is a deficient number, since it is larger than the sum of its proper divisors (213502123).

286226738 is an frugal number, since it uses more digits than its factorization.

286226738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434 (or 1718 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 286226738 is about 16918.2368466693. The cubic root of 286226738 is about 659.0272922581.

The spelling of 286226738 in words is "two hundred eighty-six million, two hundred twenty-six thousand, seven hundred thirty-eight".