822730 has 16 divisors (see below), whose sum is σ = 1532520. Its totient is φ = 317632.

The previous prime is 822727. The next prime is 822739. The reversal of 822730 is 37228.

It is a happy number.

822730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 439569 + 383161 = 663^2 + 619^2 .

It is not an unprimeable number, because it can be changed into a prime (822739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129 + ... + 1708.

2⁸²²⁷³⁰ is an apocalyptic number.

822730 is a deficient number, since it is larger than the sum of its proper divisors (709790).

822730 is a wasteful number, since it uses less digits than its factorization.

822730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 822730 is about 907.0446516021. The cubic root of 822730 is about 93.7027732505.

Adding to 822730 its reverse (37228), we get a palindrome (859958).

It can be divided in two parts, 822 and 730, that multiplied together give a triangular number (600060 = T₁₀₉₅).

The spelling of 822730 in words is "eight hundred twenty-two thousand, seven hundred thirty".