22087273 has 8 divisors (see below), whose sum is σ = 24235848. Its totient is φ = 20002944.

The previous prime is 22087259. The next prime is 22087297. The reversal of 22087273 is 37278022.

It can be written as a sum of positive squares in 4 ways, for example, as 8779369 + 13307904 = 2963^2 + 3648^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22087273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22087243) 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, 15340 + ... + 16717.

It is an arithmetic number, because the mean of its divisors is an integer number (3029481).

Almost surely, 2^22087273 is an apocalyptic number.

It is an amenable number.

22087273 is a deficient number, since it is larger than the sum of its proper divisors (2148575).

22087273 is a wasteful number, since it uses less digits than its factorization.

22087273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32123.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 22087273 is about 4699.7098846631. The cubic root of 22087273 is about 280.5739629541.

The spelling of 22087273 in words is "twenty-two million, eighty-seven thousand, two hundred seventy-three".