224561538 has 16 divisors (see below), whose sum is σ = 499025760. Its totient is φ = 74853828.

The previous prime is 224561509. The next prime is 224561539. The reversal of 224561538 is 835165422.

224561538 is a `hidden beast` number, since 2 + 2 + 4 + 5 + 615 + 38 = 666.

It is not an unprimeable number, because it can be changed into a prime (224561539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079220 + ... + 2079327.

It is an arithmetic number, because the mean of its divisors is an integer number (31189110).

Almost surely, 2^224561538 is an apocalyptic number.

224561538 is an abundant number, since it is smaller than the sum of its proper divisors (274464222).

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

224561538 is a wasteful number, since it uses less digits than its factorization.

224561538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4158558 (or 4158552 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 224561538 is about 14985.3774727232. The cubic root of 224561538 is about 607.8248590209.

The spelling of 224561538 in words is "two hundred twenty-four million, five hundred sixty-one thousand, five hundred thirty-eight".