28820073984 has 160 divisors (see below), whose sum is σ = 83618710560. Its totient is φ = 8767537152.

The previous prime is 28820073941. The next prime is 28820073991. The reversal of 28820073984 is 48937002882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769044 + ... + 1785260.

It is an arithmetic number, because the mean of its divisors is an integer number (522616941).

Almost surely, 2^28820073984 is an apocalyptic number.

28820073984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28820073984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41809355280).

28820073984 is an abundant number, since it is smaller than the sum of its proper divisors (54798636576).

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

28820073984 is a wasteful number, since it uses less digits than its factorization.

28820073984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16340 (or 16324 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 28820073984 in words is "twenty-eight billion, eight hundred twenty million, seventy-three thousand, nine hundred eighty-four".