22142456 has 32 divisors (see below), whose sum is σ = 47679840. Its totient is φ = 9443328.

The previous prime is 22142447. The next prime is 22142459. The reversal of 22142456 is 65424122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12200 + ... + 13896.

It is an arithmetic number, because the mean of its divisors is an integer number (1489995).

Almost surely, 2^22142456 is an apocalyptic number.

It is an amenable number.

22142456 is an abundant number, since it is smaller than the sum of its proper divisors (25537384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22142456 is a wasteful number, since it uses less digits than its factorization.

22142456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943 (or 1939 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 22142456 is about 4705.5771165714. The cubic root of 22142456 is about 280.8074312906.

Adding to 22142456 its reverse (65424122), we get a palindrome (87566578).

The spelling of 22142456 in words is "twenty-two million, one hundred forty-two thousand, four hundred fifty-six".