28020038484 has 24 divisors (see below), whose sum is σ = 65416726368. Its totient is φ = 9334779040.

The previous prime is 28020038461. The next prime is 28020038507. The reversal of 28020038484 is 48483002082.

It is an interprime number because it is at equal distance from previous prime (28020038461) and next prime (28020038507).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631887 + ... + 674774.

It is an arithmetic number, because the mean of its divisors is an integer number (2725696932).

Almost surely, 2^28020038484 is an apocalyptic number.

It is an amenable number.

28020038484 is an abundant number, since it is smaller than the sum of its proper divisors (37396687884).

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

28020038484 is a wasteful number, since it uses less digits than its factorization.

28020038484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308455 (or 1308453 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 39.

The spelling of 28020038484 in words is "twenty-eight billion, twenty million, thirty-eight thousand, four hundred eighty-four".