2238581892728 has 16 divisors (see below), whose sum is σ = 4197414165000. Its totient is φ = 1119271448736.

The previous prime is 2238581892721. The next prime is 2238581892733. The reversal of 2238581892728 is 8272981858322.

It is a super-2 number, since 2×2238581892728² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238581892721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943363 + ... + 2872946.

Almost surely, 2^{2238581892728} is an apocalyptic number.

It is an amenable number.

2238581892728 is a deficient number, since it is larger than the sum of its proper divisors (1958832272272).

2238581892728 is a wasteful number, since it uses less digits than its factorization.

2238581892728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874414 (or 4874410 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 65.

The spelling of 2238581892728 in words is "two trillion, two hundred thirty-eight billion, five hundred eighty-one million, eight hundred ninety-two thousand, seven hundred twenty-eight".