28177093434 has 16 divisors (see below), whose sum is σ = 64404785088. Its totient is φ = 8050598112.

The previous prime is 28177093433. The next prime is 28177093453. The reversal of 28177093434 is 43439077182.

It is not an unprimeable number, because it can be changed into a prime (28177093433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335441547 + ... + 335441630.

It is an arithmetic number, because the mean of its divisors is an integer number (4025299068).

Almost surely, 2^28177093434 is an apocalyptic number.

28177093434 is an abundant number, since it is smaller than the sum of its proper divisors (36227691654).

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

28177093434 is a wasteful number, since it uses less digits than its factorization.

28177093434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670883189.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 28177093434 in words is "twenty-eight billion, one hundred seventy-seven million, ninety-three thousand, four hundred thirty-four".