22249047 has 4 divisors (see below), whose sum is σ = 29665400. Its totient is φ = 14832696.

The previous prime is 22249043. The next prime is 22249049. The reversal of 22249047 is 74094222.

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

It is not a de Polignac number, because 22249047 - 2² = 22249043 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 (22249043) 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, 3708172 + ... + 3708177.

It is an arithmetic number, because the mean of its divisors is an integer number (7416350).

Almost surely, 2^22249047 is an apocalyptic number.

22249047 is a deficient number, since it is larger than the sum of its proper divisors (7416353).

22249047 is an equidigital number, since it uses as much as digits as its factorization.

22249047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7416352.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22249047 is about 4716.8895471486. The cubic root of 22249047 is about 281.2573007488.

The spelling of 22249047 in words is "twenty-two million, two hundred forty-nine thousand, forty-seven".