28062648449 has 16 divisors (see below), whose sum is σ = 31213330560. Its totient is φ = 25012565760.

The previous prime is 28062648407. The next prime is 28062648461. The reversal of 28062648449 is 94484626082.

It is a cyclic number.

It is not a de Polignac number, because 28062648449 - 2¹² = 28062644353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

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 28062648449.

It is not an unprimeable number, because it can be changed into a prime (28062648499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 851924 + ... + 884250.

It is an arithmetic number, because the mean of its divisors is an integer number (1950833160).

Almost surely, 2^28062648449 is an apocalyptic number.

It is an amenable number.

28062648449 is a deficient number, since it is larger than the sum of its proper divisors (3150682111).

28062648449 is a wasteful number, since it uses less digits than its factorization.

28062648449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33880.

The product of its (nonzero) digits is 5308416, while the sum is 53.

The spelling of 28062648449 in words is "twenty-eight billion, sixty-two million, six hundred forty-eight thousand, four hundred forty-nine".