22331142 has 24 divisors (see below), whose sum is σ = 49565880. Its totient is φ = 7261920.

The previous prime is 22331053. The next prime is 22331159. The reversal of 22331142 is 24113322.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14392 + ... + 15867.

It is an arithmetic number, because the mean of its divisors is an integer number (2065245).

Almost surely, 2^22331142 is an apocalyptic number.

22331142 is an abundant number, since it is smaller than the sum of its proper divisors (27234738).

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

22331142 is a wasteful number, since it uses less digits than its factorization.

22331142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30308 (or 30305 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 22331142 is about 4725.5837734612. The cubic root of 22331142 is about 281.6028058406.

Adding to 22331142 its reverse (24113322), we get a palindrome (46444464).

It can be divided in two parts, 2233 and 1142, that added together give a cube (3375 = 15³).

The spelling of 22331142 in words is "twenty-two million, three hundred thirty-one thousand, one hundred forty-two".