22273747 has 4 divisors (see below), whose sum is σ = 22415776. Its totient is φ = 22131720.

The previous prime is 22273721. The next prime is 22273753. The reversal of 22273747 is 74737222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22273747 - 2¹¹ = 22271699 is a prime.

It is a super-2 number, since 2×22273747² = 992239610840018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22073747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70779 + ... + 71092.

It is an arithmetic number, because the mean of its divisors is an integer number (5603944).

Almost surely, 2^22273747 is an apocalyptic number.

22273747 is a deficient number, since it is larger than the sum of its proper divisors (142029).

22273747 is a wasteful number, since it uses less digits than its factorization.

22273747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142028.

The product of its digits is 32928, while the sum is 34.

The square root of 22273747 is about 4719.5070717184. The cubic root of 22273747 is about 281.3613424504.

It can be divided in two parts, 222737 and 47, that added together give a square (222784 = 472²).

The spelling of 22273747 in words is "twenty-two million, two hundred seventy-three thousand, seven hundred forty-seven".