22747091 has 6 divisors (see below), whose sum is σ = 22899660. Its totient is φ = 22595408.

The previous prime is 22747079. The next prime is 22747099. The reversal of 22747091 is 19074722.

It is a de Polignac number, because none of the positive numbers 2^k-22747091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22747099) 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, 54080 + ... + 54498.

It is an arithmetic number, because the mean of its divisors is an integer number (3816610).

Almost surely, 2^22747091 is an apocalyptic number.

22747091 is a deficient number, since it is larger than the sum of its proper divisors (152569).

22747091 is an frugal number, since it uses more digits than its factorization.

22747091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 22747091 is about 4769.3910512769. The cubic root of 22747091 is about 283.3404776361.

The spelling of 22747091 in words is "twenty-two million, seven hundred forty-seven thousand, ninety-one".