22261730 has 16 divisors (see below), whose sum is σ = 42180480. Its totient is φ = 8435952.

The previous prime is 22261727. The next prime is 22261739. The reversal of 22261730 is 3716222.

It is a junction number, because it is equal to n+sod(n) for n = 22261696 and 22261705.

It is not an unprimeable number, because it can be changed into a prime (22261739) 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, 58394 + ... + 58773.

It is an arithmetic number, because the mean of its divisors is an integer number (2636280).

Almost surely, 2^22261730 is an apocalyptic number.

22261730 is a deficient number, since it is larger than the sum of its proper divisors (19918750).

22261730 is a wasteful number, since it uses less digits than its factorization.

22261730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117193.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 22261730 is about 4718.2337797104. The cubic root of 22261730 is about 281.3107338799.

Adding to 22261730 its reverse (3716222), we get a palindrome (25977952).

The spelling of 22261730 in words is "twenty-two million, two hundred sixty-one thousand, seven hundred thirty".