223747945272 has 160 divisors (see below), whose sum is σ = 635428886400. Its totient is φ = 73551240000.

The previous prime is 223747945247. The next prime is 223747945277. The reversal of 223747945272 is 272549747322.

It is a happy number.

223747945272 is a `hidden beast` number, since 2 + 23 + 7 + 4 + 7 + 94 + 527 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223747945277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 13592647 + ... + 13609097.

It is an arithmetic number, because the mean of its divisors is an integer number (3971430540).

Almost surely, 2^223747945272 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 223747945272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317714443200).

223747945272 is an abundant number, since it is smaller than the sum of its proper divisors (411680941128).

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

223747945272 is a wasteful number, since it uses less digits than its factorization.

223747945272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16759 (or 16746 counting only the distinct ones).

The product of its digits is 11854080, while the sum is 54.

The spelling of 223747945272 in words is "two hundred twenty-three billion, seven hundred forty-seven million, nine hundred forty-five thousand, two hundred seventy-two".