22273745 has 8 divisors (see below), whose sum is σ = 28784616. Its totient is φ = 16448256.

The previous prime is 22273721. The next prime is 22273753. The reversal of 22273745 is 54737222.

It can be written as a sum of positive squares in 4 ways, for example, as 753424 + 21520321 = 868^2 + 4639^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22273745 is a prime.

It is a super-2 number, since 2×22273745² = 992239432650050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171272 + ... + 171401.

It is an arithmetic number, because the mean of its divisors is an integer number (3598077).

Almost surely, 2^22273745 is an apocalyptic number.

It is an amenable number.

22273745 is a deficient number, since it is larger than the sum of its proper divisors (6510871).

22273745 is a wasteful number, since it uses less digits than its factorization.

22273745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342691.

The product of its digits is 23520, while the sum is 32.

The square root of 22273745 is about 4719.5068598319. The cubic root of 22273745 is about 281.3613340291.

The spelling of 22273745 in words is "twenty-two million, two hundred seventy-three thousand, seven hundred forty-five".