28274129 has 8 divisors (see below), whose sum is σ = 30670080. Its totient is φ = 25909776.

The previous prime is 28274093. The next prime is 28274131. The reversal of 28274129 is 92147282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28274129 - 2²⁰ = 27225553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28274329) 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, 6017 + ... + 9630.

It is an arithmetic number, because the mean of its divisors is an integer number (3833760).

Almost surely, 2^28274129 is an apocalyptic number.

It is an amenable number.

28274129 is a deficient number, since it is larger than the sum of its proper divisors (2395951).

28274129 is a wasteful number, since it uses less digits than its factorization.

28274129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15799.

The product of its digits is 16128, while the sum is 35.

The square root of 28274129 is about 5317.3422872710. The cubic root of 28274129 is about 304.6466534189.

The spelling of 28274129 in words is "twenty-eight million, two hundred seventy-four thousand, one hundred twenty-nine".