22772509 has 8 divisors (see below), whose sum is σ = 23093280. Its totient is φ = 22454256.

The previous prime is 22772483. The next prime is 22772527. The reversal of 22772509 is 90527722.

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

It is a cyclic number.

It is not a de Polignac number, because 22772509 - 2⁹ = 22771997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22772539) 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, 23574 + ... + 24520.

It is an arithmetic number, because the mean of its divisors is an integer number (2886660).

Almost surely, 2^22772509 is an apocalyptic number.

It is an amenable number.

22772509 is a deficient number, since it is larger than the sum of its proper divisors (320771).

22772509 is a wasteful number, since it uses less digits than its factorization.

22772509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 22772509 is about 4772.0550080652. The cubic root of 22772509 is about 283.4459748972.

The spelling of 22772509 in words is "twenty-two million, seven hundred seventy-two thousand, five hundred nine".