22302147 has 32 divisors (see below), whose sum is σ = 36288000. Its totient is φ = 11893248.

The previous prime is 22302139. The next prime is 22302151. The reversal of 22302147 is 74120322.

It is not a de Polignac number, because 22302147 - 2³ = 22302139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22302107) 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, 63729 + ... + 64077.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^22302147 is an apocalyptic number.

22302147 is a deficient number, since it is larger than the sum of its proper divisors (13985853).

22302147 is a wasteful number, since it uses less digits than its factorization.

22302147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22302147 is about 4722.5149020411. The cubic root of 22302147 is about 281.4808743278.

Adding to 22302147 its reverse (74120322), we get a palindrome (96422469).

The spelling of 22302147 in words is "twenty-two million, three hundred two thousand, one hundred forty-seven".