28642411 has 12 divisors (see below), whose sum is σ = 34030368. Its totient is φ = 24026352.

The previous prime is 28642409. The next prime is 28642417. The reversal of 28642411 is 11424682.

It is not a de Polignac number, because 28642411 - 2¹ = 28642409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28642411.

It is not an unprimeable number, because it can be changed into a prime (28642417) 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 11 ways as a sum of consecutive naturals, for example, 3916 + ... + 8521.

It is an arithmetic number, because the mean of its divisors is an integer number (2835864).

Almost surely, 2^28642411 is an apocalyptic number.

28642411 is a deficient number, since it is larger than the sum of its proper divisors (5387957).

28642411 is a wasteful number, since it uses less digits than its factorization.

28642411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12498 (or 12491 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 28642411 is about 5351.8605176144. The cubic root of 28642411 is about 305.9636670661.

The spelling of 28642411 in words is "twenty-eight million, six hundred forty-two thousand, four hundred eleven".