224209391868 has 288 divisors, whose sum is σ = 730403401728. Its totient is φ = 56279577600.

The previous prime is 224209391863. The next prime is 224209391897. The reversal of 224209391868 is 868193902422.

224209391868 is a `hidden beast` number, since 2 + 2 + 420 + 9 + 39 + 186 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224209391863) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 85672896 + ... + 85675512.

Almost surely, 2^224209391868 is an apocalyptic number.

224209391868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 224209391868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365201700864).

224209391868 is an abundant number, since it is smaller than the sum of its proper divisors (506194009860).

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

224209391868 is a wasteful number, since it uses less digits than its factorization.

224209391868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 224209391868 in words is "two hundred twenty-four billion, two hundred nine million, three hundred ninety-one thousand, eight hundred sixty-eight".