28004420820284 has 12 divisors (see below), whose sum is σ = 49007773815000. Its totient is φ = 14002199730288.

The previous prime is 28004420820269. The next prime is 28004420820317. The reversal of 28004420820284 is 48202802440082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7737407 + ... + 10764585.

It is an arithmetic number, because the mean of its divisors is an integer number (4083981151250).

Almost surely, 2^{28004420820284} is an apocalyptic number.

It is an amenable number.

28004420820284 is a deficient number, since it is larger than the sum of its proper divisors (21003352994716).

28004420820284 is a wasteful number, since it uses less digits than its factorization.

28004420820284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5339932 (or 5339930 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 44.

The spelling of 28004420820284 in words is "twenty-eight trillion, four billion, four hundred twenty million, eight hundred twenty thousand, two hundred eighty-four".