28733940340 has 96 divisors (see below), whose sum is σ = 69459264000. Its totient is φ = 9780756480.

The previous prime is 28733940337. The next prime is 28733940427. The reversal of 28733940340 is 4304933782.

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, 17857456 + ... + 17859064.

It is an arithmetic number, because the mean of its divisors is an integer number (723534000).

Almost surely, 2^28733940340 is an apocalyptic number.

28733940340 is a gapful number since it is divisible by the number (20) 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 28733940340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34729632000).

28733940340 is an abundant number, since it is smaller than the sum of its proper divisors (40725323660).

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

28733940340 is a wasteful number, since it uses less digits than its factorization.

28733940340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 28733940340 in words is "twenty-eight billion, seven hundred thirty-three million, nine hundred forty thousand, three hundred forty".