22002447 has 8 divisors (see below), whose sum is σ = 29476480. Its totient is φ = 14598360.

The previous prime is 22002443. The next prime is 22002509. The reversal of 22002447 is 74420022.

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

It is not a de Polignac number, because 22002447 - 2² = 22002443 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 (22002443) 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, 16747 + ... + 18012.

It is an arithmetic number, because the mean of its divisors is an integer number (3684560).

Almost surely, 2^22002447 is an apocalyptic number.

22002447 is a deficient number, since it is larger than the sum of its proper divisors (7474033).

22002447 is a wasteful number, since it uses less digits than its factorization.

22002447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34973.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 22002447 is about 4690.6766036469. The cubic root of 22002447 is about 280.2143214535.

Adding to 22002447 its reverse (74420022), we get a palindrome (96422469).

The spelling of 22002447 in words is "twenty-two million, two thousand, four hundred forty-seven".