13638206928 has 40 divisors (see below), whose sum is σ = 35574106048. Its totient is φ = 4501930752.

The previous prime is 13638206899. The next prime is 13638206957. The reversal of 13638206928 is 82960283631.

It is an interprime number because it is at equal distance from previous prime (13638206899) and next prime (13638206957).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374325 + ... + 1384212.

Almost surely, 2^13638206928 is an apocalyptic number.

It is an amenable number.

13638206928 is an abundant number, since it is smaller than the sum of its proper divisors (21935899120).

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

13638206928 is a wasteful number, since it uses less digits than its factorization.

13638206928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758651 (or 2758645 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 48.

The spelling of 13638206928 in words is "thirteen billion, six hundred thirty-eight million, two hundred six thousand, nine hundred twenty-eight".