22990047 has 4 divisors (see below), whose sum is σ = 30653400. Its totient is φ = 15326696.

The previous prime is 22990039. The next prime is 22990049. The reversal of 22990047 is 74009922.

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 22990047 - 2³ = 22990039 is a prime.

It is a super-2 number, since 2×22990047² = 1057084522124418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22990049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3831672 + ... + 3831677.

It is an arithmetic number, because the mean of its divisors is an integer number (7663350).

Almost surely, 2^22990047 is an apocalyptic number.

22990047 is a deficient number, since it is larger than the sum of its proper divisors (7663353).

22990047 is an equidigital number, since it uses as much as digits as its factorization.

22990047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7663352.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 22990047 is about 4794.7937390466. The cubic root of 22990047 is about 284.3456703157.

Adding to 22990047 its reverse (74009922), we get a palindrome (96999969).

The spelling of 22990047 in words is "twenty-two million, nine hundred ninety thousand, forty-seven".