28351427 has 8 divisors (see below), whose sum is σ = 32328576. Its totient is φ = 24630912.

The previous prime is 28351417. The next prime is 28351457. The reversal of 28351427 is 72415382.

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 28351427 - 2¹⁰ = 28350403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28351393 and 28351402.

It is not an unprimeable number, because it can be changed into a prime (28351417) 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 7 ways as a sum of consecutive naturals, for example, 63923 + ... + 64364.

It is an arithmetic number, because the mean of its divisors is an integer number (4041072).

Almost surely, 2^28351427 is an apocalyptic number.

28351427 is a deficient number, since it is larger than the sum of its proper divisors (3977149).

28351427 is a wasteful number, since it uses less digits than its factorization.

28351427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128317.

The product of its digits is 13440, while the sum is 32.

The square root of 28351427 is about 5324.6058070058. The cubic root of 28351427 is about 304.9240229995.

The spelling of 28351427 in words is "twenty-eight million, three hundred fifty-one thousand, four hundred twenty-seven".