22145230 has 16 divisors (see below), whose sum is σ = 40343184. Its totient is φ = 8751040.

The previous prime is 22145209. The next prime is 22145243. The reversal of 22145230 is 3254122.

It is a super-2 number, since 2×22145230² = 980822423505800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22145198 and 22145207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12511 + ... + 14170.

It is an arithmetic number, because the mean of its divisors is an integer number (2521449).

Almost surely, 2^22145230 is an apocalyptic number.

22145230 is a deficient number, since it is larger than the sum of its proper divisors (18197954).

22145230 is a wasteful number, since it uses less digits than its factorization.

22145230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26771.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22145230 is about 4705.8718639589. The cubic root of 22145230 is about 280.8191572902.

Adding to 22145230 its reverse (3254122), we get a palindrome (25399352).

It can be divided in two parts, 221 and 45230, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 22145230 in words is "twenty-two million, one hundred forty-five thousand, two hundred thirty".