28937443536 has 160 divisors (see below), whose sum is σ = 89294284800. Its totient is φ = 8943592320.

The previous prime is 28937443471. The next prime is 28937443543. The reversal of 28937443536 is 63534473982.

28937443536 is a `hidden beast` number, since 28 + 93 + 74 + 435 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348271 + ... + 423281.

It is an arithmetic number, because the mean of its divisors is an integer number (558089280).

Almost surely, 2^28937443536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28937443536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44647142400).

28937443536 is an abundant number, since it is smaller than the sum of its proper divisors (60356841264).

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

28937443536 is a wasteful number, since it uses less digits than its factorization.

28937443536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75094 (or 75082 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 54.

The spelling of 28937443536 in words is "twenty-eight billion, nine hundred thirty-seven million, four hundred forty-three thousand, five hundred thirty-six".