28840540134 has 64 divisors (see below), whose sum is σ = 66191224320. Its totient is φ = 8206479360.

The previous prime is 28840540117. The next prime is 28840540139. The reversal of 28840540134 is 43104504882.

It is a super-3 number, since 3×28840540134³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28840540092 and 28840540101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28840540139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18836949 + ... + 18838479.

It is an arithmetic number, because the mean of its divisors is an integer number (1034237880).

Almost surely, 2^28840540134 is an apocalyptic number.

28840540134 is an abundant number, since it is smaller than the sum of its proper divisors (37350684186).

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

28840540134 is a wasteful number, since it uses less digits than its factorization.

28840540134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085.

The product of its (nonzero) digits is 122880, while the sum is 39.

The spelling of 28840540134 in words is "twenty-eight billion, eight hundred forty million, five hundred forty thousand, one hundred thirty-four".