28774948158 has 48 divisors (see below), whose sum is σ = 68069430000. Its totient is φ = 8712512640.

The previous prime is 28774948157. The next prime is 28774948159. The reversal of 28774948158 is 85184947782.

28774948158 is a `hidden beast` number, since 2 + 87 + 74 + 9 + 481 + 5 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (28774948157) and next prime (28774948159).

It is a junction number, because it is equal to n+sod(n) for n = 28774948095 and 28774948104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774948151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184218 + ... + 302466.

It is an arithmetic number, because the mean of its divisors is an integer number (1418113125).

Almost surely, 2^28774948158 is an apocalyptic number.

28774948158 is an abundant number, since it is smaller than the sum of its proper divisors (39294481842).

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

28774948158 is a wasteful number, since it uses less digits than its factorization.

28774948158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119497 (or 119494 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 28774948158 in words is "twenty-eight billion, seven hundred seventy-four million, nine hundred forty-eight thousand, one hundred fifty-eight".