28378465283 has 16 divisors (see below), whose sum is σ = 32990872320. Its totient is φ = 23905860000.

The previous prime is 28378465259. The next prime is 28378465327. The reversal of 28378465283 is 38256487382.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28378465283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28378465223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2265668 + ... + 2278158.

It is an arithmetic number, because the mean of its divisors is an integer number (2061929520).

Almost surely, 2^28378465283 is an apocalyptic number.

28378465283 is a deficient number, since it is larger than the sum of its proper divisors (4612407037).

28378465283 is a wasteful number, since it uses less digits than its factorization.

28378465283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18058.

The product of its digits is 15482880, while the sum is 56.

The spelling of 28378465283 in words is "twenty-eight billion, three hundred seventy-eight million, four hundred sixty-five thousand, two hundred eighty-three".