38945286628 has 12 divisors (see below), whose sum is σ = 68272373932. Its totient is φ = 19438894080.

The previous prime is 38945286619. The next prime is 38945286647. The reversal of 38945286628 is 82668254983.

It can be written as a sum of positive squares in 2 ways, for example, as 36606403584 + 2338883044 = 191328^2 + 48362^2 .

It is a super-2 number, since 2×38945286628² (a number of 22 digits) contains 22 as substring.

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, 8434713 + ... + 8439328.

Almost surely, 2^38945286628 is an apocalyptic number.

It is an amenable number.

38945286628 is a deficient number, since it is larger than the sum of its proper divisors (29327087304).

38945286628 is a wasteful number, since it uses less digits than its factorization.

38945286628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16874622 (or 16874620 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 61.

The spelling of 38945286628 in words is "thirty-eight billion, nine hundred forty-five million, two hundred eighty-six thousand, six hundred twenty-eight".