22031446 has 4 divisors (see below), whose sum is σ = 33047172. Its totient is φ = 11015722.

The previous prime is 22031423. The next prime is 22031459. The reversal of 22031446 is 64413022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64413022 = 2 ⋅32206511.

It is a super-2 number, since 2×22031446² = 970769225701832, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5507860 + ... + 5507863.

It is an arithmetic number, because the mean of its divisors is an integer number (8261793).

Almost surely, 2^22031446 is an apocalyptic number.

22031446 is a deficient number, since it is larger than the sum of its proper divisors (11015726).

22031446 is a wasteful number, since it uses less digits than its factorization.

22031446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11015725.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 22031446 is about 4693.7667176799. The cubic root of 22031446 is about 280.3373739448.

Adding to 22031446 its reverse (64413022), we get a palindrome (86444468).

The spelling of 22031446 in words is "twenty-two million, thirty-one thousand, four hundred forty-six".