28743897455 has 32 divisors (see below), whose sum is σ = 42550859904. Its totient is φ = 18151796736.

The previous prime is 28743897443. The next prime is 28743897503. The reversal of 28743897455 is 55479834782.

It is a cyclic number.

It is not a de Polignac number, because 28743897455 - 2⁴ = 28743897439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124067 + ... + 269963.

It is an arithmetic number, because the mean of its divisors is an integer number (1329714372).

Almost surely, 2^28743897455 is an apocalyptic number.

28743897455 is a deficient number, since it is larger than the sum of its proper divisors (13806962449).

28743897455 is a wasteful number, since it uses less digits than its factorization.

28743897455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146355.

The product of its digits is 67737600, while the sum is 62.

The spelling of 28743897455 in words is "twenty-eight billion, seven hundred forty-three million, eight hundred ninety-seven thousand, four hundred fifty-five".