22381454 has 4 divisors (see below), whose sum is σ = 33572184. Its totient is φ = 11190726.

The previous prime is 22381451. The next prime is 22381459. The reversal of 22381454 is 45418322.

It is a happy number.

22381454 is nontrivially palindromic in base 13.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22381451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5595362 + ... + 5595365.

It is an arithmetic number, because the mean of its divisors is an integer number (8393046).

Almost surely, 2^22381454 is an apocalyptic number.

22381454 is a deficient number, since it is larger than the sum of its proper divisors (11190730).

22381454 is a wasteful number, since it uses less digits than its factorization.

22381454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190729.

The product of its digits is 7680, while the sum is 29.

The square root of 22381454 is about 4730.9041419162. The cubic root of 22381454 is about 281.8141306579.

Adding to 22381454 its reverse (45418322), we get a palindrome (67799776).

The spelling of 22381454 in words is "twenty-two million, three hundred eighty-one thousand, four hundred fifty-four".