22509794 has 12 divisors (see below), whose sum is σ = 35636454. Its totient is φ = 10662192.

The previous prime is 22509749. The next prime is 22509797. The reversal of 22509794 is 49790522.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 5822569 = 4085^2 + 2413^2 .

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22509797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14867 + ... + 16310.

Almost surely, 2^22509794 is an apocalyptic number.

22509794 is a deficient number, since it is larger than the sum of its proper divisors (13126660).

22509794 is a wasteful number, since it uses less digits than its factorization.

22509794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31217 (or 31198 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 22509794 is about 4744.4487561781. The cubic root of 22509794 is about 282.3517649750.

The spelling of 22509794 in words is "twenty-two million, five hundred nine thousand, seven hundred ninety-four".