28660411 has 4 divisors (see below), whose sum is σ = 30865072. Its totient is φ = 26455752.

The previous prime is 28660409. The next prime is 28660421. The reversal of 28660411 is 11406682.

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

It is a cyclic number.

It is not a de Polignac number, because 28660411 - 2¹ = 28660409 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 28660411.

It is not an unprimeable number, because it can be changed into a prime (28660421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102311 + ... + 1102336.

It is an arithmetic number, because the mean of its divisors is an integer number (7716268).

Almost surely, 2^28660411 is an apocalyptic number.

28660411 is a deficient number, since it is larger than the sum of its proper divisors (2204661).

28660411 is a wasteful number, since it uses less digits than its factorization.

28660411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204660.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 28660411 is about 5353.5419116693. The cubic root of 28660411 is about 306.0277467827.

The spelling of 28660411 in words is "twenty-eight million, six hundred sixty thousand, four hundred eleven".