22180037 has 4 divisors (see below), whose sum is σ = 24196416. Its totient is φ = 20163660.

The previous prime is 22180031. The next prime is 22180063. The reversal of 22180037 is 73008122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-22180037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22179994 and 22180021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22180031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008173 + ... + 1008194.

It is an arithmetic number, because the mean of its divisors is an integer number (6049104).

Almost surely, 2^22180037 is an apocalyptic number.

It is an amenable number.

22180037 is a deficient number, since it is larger than the sum of its proper divisors (2016379).

22180037 is a wasteful number, since it uses less digits than its factorization.

22180037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016378.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 22180037 is about 4709.5686639012. The cubic root of 22180037 is about 280.9662071038.

Adding to 22180037 its reverse (73008122), we get a palindrome (95188159).

The spelling of 22180037 in words is "twenty-two million, one hundred eighty thousand, thirty-seven".