23840228 has 12 divisors (see below), whose sum is σ = 41758080. Its totient is φ = 11909352.

The previous prime is 23840227. The next prime is 23840249. The reversal of 23840228 is 82204832.

It is a self number, because there is not a number n which added to its sum of digits gives 23840228.

It is not an unprimeable number, because it can be changed into a prime (23840227) 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, 4325 + ... + 8147.

It is an arithmetic number, because the mean of its divisors is an integer number (3479840).

Almost surely, 2^23840228 is an apocalyptic number.

It is an amenable number.

23840228 is a deficient number, since it is larger than the sum of its proper divisors (17917852).

23840228 is a wasteful number, since it uses less digits than its factorization.

23840228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386 (or 5384 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 23840228 is about 4882.6455943474. The cubic root of 23840228 is about 287.8084020133.

The spelling of 23840228 in words is "twenty-three million, eight hundred forty thousand, two hundred twenty-eight".