22231730 has 16 divisors (see below), whose sum is σ = 40284864. Its totient is φ = 8833200.

The previous prime is 22231723. The next prime is 22231757. The reversal of 22231730 is 3713222.

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, 5852 + ... + 8871.

It is an arithmetic number, because the mean of its divisors is an integer number (2517804).

Almost surely, 2^22231730 is an apocalyptic number.

22231730 is a deficient number, since it is larger than the sum of its proper divisors (18053134).

22231730 is a wasteful number, since it uses less digits than its factorization.

22231730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14881.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 22231730 is about 4715.0535521879. The cubic root of 22231730 is about 281.1843119020.

Adding to 22231730 its reverse (3713222), we get a palindrome (25944952).

The spelling of 22231730 in words is "twenty-two million, two hundred thirty-one thousand, seven hundred thirty".