22257346 has 4 divisors (see below), whose sum is σ = 33386022. Its totient is φ = 11128672.

The previous prime is 22257343. The next prime is 22257401. The reversal of 22257346 is 64375222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64375222 = 2 ⋅32187611.

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 4575321 = 4205^2 + 2139^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22257343) 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 as a sum of consecutive naturals, namely, 5564335 + ... + 5564338.

Almost surely, 2^22257346 is an apocalyptic number.

22257346 is a deficient number, since it is larger than the sum of its proper divisors (11128676).

22257346 is a wasteful number, since it uses less digits than its factorization.

22257346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11128675.

The product of its digits is 20160, while the sum is 31.

The square root of 22257346 is about 4717.7691762103. The cubic root of 22257346 is about 281.2922665038.

The spelling of 22257346 in words is "twenty-two million, two hundred fifty-seven thousand, three hundred forty-six".