28408448004 has 24 divisors (see below), whose sum is σ = 68077903488. Its totient is φ = 9213550560.

The previous prime is 28408447997. The next prime is 28408448011. The reversal of 28408448004 is 40084480482.

It is an interprime number because it is at equal distance from previous prime (28408447997) and next prime (28408448011).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31991052 + ... + 31991939.

It is an arithmetic number, because the mean of its divisors is an integer number (2836579312).

Almost surely, 2^28408448004 is an apocalyptic number.

It is an amenable number.

28408448004 is an abundant number, since it is smaller than the sum of its proper divisors (39669455484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28408448004 is a wasteful number, since it uses less digits than its factorization.

28408448004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63983035 (or 63983033 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 42.

The spelling of 28408448004 in words is "twenty-eight billion, four hundred eight million, four hundred forty-eight thousand, four".