286272461 has 4 divisors (see below), whose sum is σ = 287755932. Its totient is φ = 284788992.

The previous prime is 286272443. The next prime is 286272463. The reversal of 286272461 is 164272682.

286272461 = 394² + 395² + ... + 972².

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 75151561 + 211120900 = 8669^2 + 14530^2 .

It is a cyclic number.

It is not a de Polignac number, because 286272461 - 2⁶ = 286272397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286272463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741446 + ... + 741831.

It is an arithmetic number, because the mean of its divisors is an integer number (71938983).

Almost surely, 2^286272461 is an apocalyptic number.

It is an amenable number.

286272461 is a deficient number, since it is larger than the sum of its proper divisors (1483471).

286272461 is a wasteful number, since it uses less digits than its factorization.

286272461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483470.

The product of its digits is 64512, while the sum is 38.

The square root of 286272461 is about 16919.5880860026. The cubic root of 286272461 is about 659.0623822718.

The spelling of 286272461 in words is "two hundred eighty-six million, two hundred seventy-two thousand, four hundred sixty-one".