224539812 has 72 divisors (see below), whose sum is σ = 652107456. Its totient is φ = 63814464.

The previous prime is 224539811. The next prime is 224539813. The reversal of 224539812 is 218935422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (224539811) and next prime (224539813).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (224539811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47383 + ... + 51905.

It is an arithmetic number, because the mean of its divisors is an integer number (9057048).

Almost surely, 2^224539812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224539812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326053728).

224539812 is an abundant number, since it is smaller than the sum of its proper divisors (427567644).

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

224539812 is a wasteful number, since it uses less digits than its factorization.

224539812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737 (or 4732 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 224539812 is about 14984.6525485244. The cubic root of 224539812 is about 607.8052563337.

The spelling of 224539812 in words is "two hundred twenty-four million, five hundred thirty-nine thousand, eight hundred twelve".