28591270134 has 16 divisors (see below), whose sum is σ = 65351474688. Its totient is φ = 8168934312.

The previous prime is 28591270093. The next prime is 28591270153. The reversal of 28591270134 is 43107219582.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 680744527 = 28591270134 / (2 + 8 + 5 + 9 + 1 + 2 + 7 + 0 + 1 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340372222 + ... + 340372305.

It is an arithmetic number, because the mean of its divisors is an integer number (4084467168).

Almost surely, 2^28591270134 is an apocalyptic number.

28591270134 is an abundant number, since it is smaller than the sum of its proper divisors (36760204554).

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

28591270134 is a wasteful number, since it uses less digits than its factorization.

28591270134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680744539.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 28591270134 in words is "twenty-eight billion, five hundred ninety-one million, two hundred seventy thousand, one hundred thirty-four".