28434611 has 4 divisors (see below), whose sum is σ = 29203152. Its totient is φ = 27666072.

The previous prime is 28434551. The next prime is 28434613. The reversal of 28434611 is 11643482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28434611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28434613) 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 3 ways as a sum of consecutive naturals, for example, 384215 + ... + 384288.

It is an arithmetic number, because the mean of its divisors is an integer number (7300788).

Almost surely, 2^28434611 is an apocalyptic number.

28434611 is a deficient number, since it is larger than the sum of its proper divisors (768541).

28434611 is an equidigital number, since it uses as much as digits as its factorization.

28434611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768540.

The product of its digits is 4608, while the sum is 29.

The square root of 28434611 is about 5332.4113682273. The cubic root of 28434611 is about 305.2219507810.

The spelling of 28434611 in words is "twenty-eight million, four hundred thirty-four thousand, six hundred eleven".