22481047 has 4 divisors (see below), whose sum is σ = 23664280. Its totient is φ = 21297816.

The previous prime is 22481033. The next prime is 22481059. The reversal of 22481047 is 74018422.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22481047 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 (22481027) 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, 591588 + ... + 591625.

It is an arithmetic number, because the mean of its divisors is an integer number (5916070).

Almost surely, 2^22481047 is an apocalyptic number.

22481047 is a deficient number, since it is larger than the sum of its proper divisors (1183233).

22481047 is a wasteful number, since it uses less digits than its factorization.

22481047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183232.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 22481047 is about 4741.4182477398. The cubic root of 22481047 is about 282.2315177037.

Adding to 22481047 its reverse (74018422), we get a palindrome (96499469).

The spelling of 22481047 in words is "twenty-two million, four hundred eighty-one thousand, forty-seven".