28134057 has 16 divisors (see below), whose sum is σ = 43355520. Its totient is φ = 15894912.

The previous prime is 28134053. The next prime is 28134101. The reversal of 28134057 is 75043182.

It is not a de Polignac number, because 28134057 - 2² = 28134053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28134053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5658 + ... + 9395.

It is an arithmetic number, because the mean of its divisors is an integer number (2709720).

Almost surely, 2^28134057 is an apocalyptic number.

It is an amenable number.

28134057 is a deficient number, since it is larger than the sum of its proper divisors (15221463).

28134057 is a wasteful number, since it uses less digits than its factorization.

28134057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28134057 is about 5304.1546923143. The cubic root of 28134057 is about 304.1427401291.

The spelling of 28134057 in words is "twenty-eight million, one hundred thirty-four thousand, fifty-seven".