22472146 has 4 divisors (see below), whose sum is σ = 33708222. Its totient is φ = 11236072.

The previous prime is 22472111. The next prime is 22472161. The reversal of 22472146 is 64127422.

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: 64127422 = 2 ⋅32063711.

It can be written as a sum of positive squares in only one way, i.e., 11323225 + 11148921 = 3365^2 + 3339^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5618035 + ... + 5618038.

Almost surely, 2^22472146 is an apocalyptic number.

22472146 is a deficient number, since it is larger than the sum of its proper divisors (11236076).

22472146 is a wasteful number, since it uses less digits than its factorization.

22472146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11236075.

The product of its digits is 5376, while the sum is 28.

The square root of 22472146 is about 4740.4795116106. The cubic root of 22472146 is about 282.1942644809.

Adding to 22472146 its reverse (64127422), we get a palindrome (86599568).

The spelling of 22472146 in words is "twenty-two million, four hundred seventy-two thousand, one hundred forty-six".