28504031384 has 32 divisors (see below), whose sum is σ = 54778982400. Its totient is φ = 13900108320.

The previous prime is 28504031327. The next prime is 28504031429. The reversal of 28504031384 is 48313040582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177812 + ... + 297699.

It is an arithmetic number, because the mean of its divisors is an integer number (1711843200).

Almost surely, 2^28504031384 is an apocalyptic number.

It is an amenable number.

28504031384 is a deficient number, since it is larger than the sum of its proper divisors (26274951016).

28504031384 is a wasteful number, since it uses less digits than its factorization.

28504031384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475703 (or 475699 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 28504031384 in words is "twenty-eight billion, five hundred four million, thirty-one thousand, three hundred eighty-four".