22007142 has 24 divisors (see below), whose sum is σ = 48792744. Its totient is φ = 7164864.

The previous prime is 22007123. The next prime is 22007173. The reversal of 22007142 is 24170022.

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 polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13443 + ... + 14990.

It is an arithmetic number, because the mean of its divisors is an integer number (2033031).

Almost surely, 2^22007142 is an apocalyptic number.

22007142 is an abundant number, since it is smaller than the sum of its proper divisors (26785602).

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

22007142 is a wasteful number, since it uses less digits than its factorization.

22007142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28484 (or 28481 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22007142 is about 4691.1770378019. The cubic root of 22007142 is about 280.2342512469.

Adding to 22007142 its reverse (24170022), we get a palindrome (46177164).

The spelling of 22007142 in words is "twenty-two million, seven thousand, one hundred forty-two".