22229047 has 4 divisors (see below), whose sum is σ = 23536656. Its totient is φ = 20921440.

The previous prime is 22229041. The next prime is 22229057. The reversal of 22229047 is 74092222.

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 22229047 - 2⁷ = 22228919 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 (22229041) 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, 653779 + ... + 653812.

It is an arithmetic number, because the mean of its divisors is an integer number (5884164).

Almost surely, 2^22229047 is an apocalyptic number.

22229047 is a deficient number, since it is larger than the sum of its proper divisors (1307609).

22229047 is a wasteful number, since it uses less digits than its factorization.

22229047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307608.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22229047 is about 4714.7690293375. The cubic root of 22229047 is about 281.1730000239.

It can be divided in two parts, 2 and 2229047, that added together give a square (2229049 = 1493²).

The spelling of 22229047 in words is "twenty-two million, two hundred twenty-nine thousand, forty-seven".