22723284 has 12 divisors (see below), whose sum is σ = 53021024. Its totient is φ = 7574424.

The previous prime is 22723277. The next prime is 22723289. The reversal of 22723284 is 48232722.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22723289) 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, 946792 + ... + 946815.

Almost surely, 2^22723284 is an apocalyptic number.

It is an amenable number.

22723284 is an abundant number, since it is smaller than the sum of its proper divisors (30297740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22723284 is a wasteful number, since it uses less digits than its factorization.

22723284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893614 (or 1893612 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 22723284 is about 4766.8945866256. The cubic root of 22723284 is about 283.2415955214.

The spelling of 22723284 in words is "twenty-two million, seven hundred twenty-three thousand, two hundred eighty-four".