11638287028 has 12 divisors (see below), whose sum is σ = 20428536352. Its totient is φ = 5801562360.

The previous prime is 11638286951. The next prime is 11638287053. The reversal of 11638287028 is 82078283611.

11638287028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11638287028² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4393800 + ... + 4396447.

Almost surely, 2^11638287028 is an apocalyptic number.

It is an amenable number.

11638287028 is a deficient number, since it is larger than the sum of its proper divisors (8790249324).

11638287028 is a wasteful number, since it uses less digits than its factorization.

11638287028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8790582 (or 8790580 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 11638287028 in words is "eleven billion, six hundred thirty-eight million, two hundred eighty-seven thousand, twenty-eight".