23220422 has 4 divisors (see below), whose sum is σ = 34830636. Its totient is φ = 11610210.

The previous prime is 23220403. The next prime is 23220437. The reversal of 23220422 is 22402232.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23220422.

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, 5805104 + ... + 5805107.

It is an arithmetic number, because the mean of its divisors is an integer number (8707659).

Almost surely, 2^23220422 is an apocalyptic number.

23220422 is a deficient number, since it is larger than the sum of its proper divisors (11610214).

23220422 is a wasteful number, since it uses less digits than its factorization.

23220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11610213.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 23220422 is about 4818.7573086845. The cubic root of 23220422 is about 285.2922906704.

Adding to 23220422 its reverse (22402232), we get a palindrome (45622654).

The spelling of 23220422 in words is "twenty-three million, two hundred twenty thousand, four hundred twenty-two".