22228644280628 has 12 divisors (see below), whose sum is σ = 38920830073440. Its totient is φ = 11108407116792.

The previous prime is 22228644280573. The next prime is 22228644280651. The reversal of 22228644280628 is 82608244682222.

It is a happy number.

It is a super-2 number, since 2×22228644280628² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1478747426 + ... + 1478762457.

It is an arithmetic number, because the mean of its divisors is an integer number (3243402506120).

Almost surely, 2^{22228644280628} is an apocalyptic number.

It is an amenable number.

22228644280628 is a deficient number, since it is larger than the sum of its proper divisors (16692185792812).

22228644280628 is a wasteful number, since it uses less digits than its factorization.

22228644280628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2957511766 (or 2957511764 counting only the distinct ones).

The product of its (nonzero) digits is 18874368, while the sum is 56.

The spelling of 22228644280628 in words is "twenty-two trillion, two hundred twenty-eight billion, six hundred forty-four million, two hundred eighty thousand, six hundred twenty-eight".