22251742 has 16 divisors (see below), whose sum is σ = 35534592. Its totient is φ = 10414080.

The previous prime is 22251737. The next prime is 22251743. The reversal of 22251742 is 24715222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22251743) by changing a digit.

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, 4867 + ... + 8257.

It is an arithmetic number, because the mean of its divisors is an integer number (2220912).

Almost surely, 2^22251742 is an apocalyptic number.

22251742 is a deficient number, since it is larger than the sum of its proper divisors (13282850).

22251742 is a wasteful number, since it uses less digits than its factorization.

22251742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603.

The product of its digits is 2240, while the sum is 25.

The square root of 22251742 is about 4717.1752140449. The cubic root of 22251742 is about 281.2686564085.

Adding to 22251742 its reverse (24715222), we get a palindrome (46966964).

The spelling of 22251742 in words is "twenty-two million, two hundred fifty-one thousand, seven hundred forty-two".