28365045405 has 16 divisors (see below), whose sum is σ = 45930870720. Its totient is φ = 14945758208.

The previous prime is 28365045367. The next prime is 28365045407. The reversal of 28365045405 is 50454056382.

It is not a de Polignac number, because 28365045405 - 2¹⁰ = 28365044381 is a prime.

It is a super-2 number, since 2×28365045405² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28365045407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11390340 + ... + 11392829.

It is an arithmetic number, because the mean of its divisors is an integer number (2870679420).

Almost surely, 2^28365045405 is an apocalyptic number.

It is an amenable number.

28365045405 is a deficient number, since it is larger than the sum of its proper divisors (17565825315).

28365045405 is a wasteful number, since it uses less digits than its factorization.

28365045405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22783260.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 28365045405 in words is "twenty-eight billion, three hundred sixty-five million, forty-five thousand, four hundred five".