28451836134 has 12 divisors (see below), whose sum is σ = 61645644996. Its totient is φ = 9483945372.

The previous prime is 28451836129. The next prime is 28451836139. The reversal of 28451836134 is 43163815482.

28451836134 is a `hidden beast` number, since 28 + 4 + 5 + 1 + 8 + 3 + 613 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (28451836129) and next prime (28451836139).

It is a self number, because there is not a number n which added to its sum of digits gives 28451836134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28451836139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 790328764 + ... + 790328799.

It is an arithmetic number, because the mean of its divisors is an integer number (5137137083).

Almost surely, 2^28451836134 is an apocalyptic number.

28451836134 is an abundant number, since it is smaller than the sum of its proper divisors (33193808862).

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

28451836134 is a wasteful number, since it uses less digits than its factorization.

28451836134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580657571 (or 1580657568 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 28451836134 in words is "twenty-eight billion, four hundred fifty-one million, eight hundred thirty-six thousand, one hundred thirty-four".