22305147 has 32 divisors (see below), whose sum is σ = 32762880. Its totient is φ = 13453440.

The previous prime is 22305133. The next prime is 22305149. The reversal of 22305147 is 74150322.

It is not a de Polignac number, because 22305147 - 2¹⁵ = 22272379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22305149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141993 + ... + 142149.

It is an arithmetic number, because the mean of its divisors is an integer number (1023840).

Almost surely, 2^22305147 is an apocalyptic number.

22305147 is a deficient number, since it is larger than the sum of its proper divisors (10457733).

22305147 is a wasteful number, since it uses less digits than its factorization.

22305147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 22305147 is about 4722.8325187328. The cubic root of 22305147 is about 281.4934950075.

Adding to 22305147 its reverse (74150322), we get a palindrome (96455469).

The spelling of 22305147 in words is "twenty-two million, three hundred five thousand, one hundred forty-seven".