223444212040 has 48 divisors (see below), whose sum is σ = 584831029500. Its totient is φ = 76609443456.

The previous prime is 223444212023. The next prime is 223444212067. The reversal of 223444212040 is 40212444322.

It can be written as a sum of positive squares in 2 ways, for example, as 220131749124 + 3312462916 = 469182^2 + 57554^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56999115 + ... + 57003034.

Almost surely, 2^223444212040 is an apocalyptic number.

223444212040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223444212040 is an abundant number, since it is smaller than the sum of its proper divisors (361386817460).

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

223444212040 is a wasteful number, since it uses less digits than its factorization.

223444212040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114002174 (or 114002163 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 223444212040 its reverse (40212444322), we get a palindrome (263656656362).

The spelling of 223444212040 in words is "two hundred twenty-three billion, four hundred forty-four million, two hundred twelve thousand, forty".