28276157572938 has 112 divisors (see below), whose sum is σ = 69421378614336. Its totient is φ = 8562603985920.

The previous prime is 28276157572879. The next prime is 28276157572987. The reversal of 28276157572938 is 83927575167282.

It is a happy number.

28276157572938 is a `hidden beast` number, since 2 + 8 + 2 + 7 + 6 + 15 + 7 + 572 + 9 + 38 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 22597770 + ... + 23816202.

It is an arithmetic number, because the mean of its divisors is an integer number (619833737628).

Almost surely, 2^{28276157572938} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28276157572938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34710689307168).

28276157572938 is an abundant number, since it is smaller than the sum of its proper divisors (41145221041398).

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

28276157572938 is a wasteful number, since it uses less digits than its factorization.

28276157572938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219911 (or 1219896 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 72.

The spelling of 28276157572938 in words is "twenty-eight trillion, two hundred seventy-six billion, one hundred fifty-seven million, five hundred seventy-two thousand, nine hundred thirty-eight".