22730 has 8 divisors (see below), whose sum is σ = 40932. Its totient is φ = 9088.

The previous prime is 22727. The next prime is 22739. The reversal of 22730 is 3722.

It can be written as a sum of positive squares in 2 ways, for example, as 22201 + 529 = 149^2 + 23^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127 + ... + 1146.

2²²⁷³⁰ is an apocalyptic number.

22730 is a deficient number, since it is larger than the sum of its proper divisors (18202).

22730 is a wasteful number, since it uses less digits than its factorization.

22730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 22730 is about 150.7647173579. The cubic root of 22730 is about 28.3269497345.

It can be divided in two parts, 2 and 2730, that multiplied together give a triangular number (5460 = T₁₀₄).

The spelling of 22730 in words is "twenty-two thousand, seven hundred thirty".