22130442 has 16 divisors (see below), whose sum is σ = 49178880. Its totient is φ = 7376796.

The previous prime is 22130441. The next prime is 22130483. The reversal of 22130442 is 24403122.

22130442 is a `hidden beast` number, since 221 + 3 + 0 + 442 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (22130441) 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, 204858 + ... + 204965.

It is an arithmetic number, because the mean of its divisors is an integer number (3073680).

Almost surely, 2^22130442 is an apocalyptic number.

22130442 is an abundant number, since it is smaller than the sum of its proper divisors (27048438).

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

22130442 is a wasteful number, since it uses less digits than its factorization.

22130442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409834 (or 409828 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22130442 is about 4704.3003730629. The cubic root of 22130442 is about 280.7566354979.

Adding to 22130442 its reverse (24403122), we get a palindrome (46533564).

The spelling of 22130442 in words is "twenty-two million, one hundred thirty thousand, four hundred forty-two".