23021422 has 4 divisors (see below), whose sum is σ = 34532136. Its totient is φ = 11510710.

The previous prime is 23021393. The next prime is 23021423. The reversal of 23021422 is 22412032.

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

It is a junction number, because it is equal to n+sod(n) for n = 23021396 and 23021405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5755354 + ... + 5755357.

It is an arithmetic number, because the mean of its divisors is an integer number (8633034).

Almost surely, 2^23021422 is an apocalyptic number.

23021422 is a deficient number, since it is larger than the sum of its proper divisors (11510714).

23021422 is a wasteful number, since it uses less digits than its factorization.

23021422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11510713.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 23021422 is about 4798.0644014019. The cubic root of 23021422 is about 284.4749623538.

Adding to 23021422 its reverse (22412032), we get a palindrome (45433454).

The spelling of 23021422 in words is "twenty-three million, twenty-one thousand, four hundred twenty-two".