28935640272 has 160 divisors (see below), whose sum is σ = 93822566400. Its totient is φ = 7465167360.

The previous prime is 28935640241. The next prime is 28935640273. The reversal of 28935640272 is 27204653982.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28935640273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 524433 + ... + 576975.

It is an arithmetic number, because the mean of its divisors is an integer number (586391040).

Almost surely, 2^28935640272 is an apocalyptic number.

28935640272 is a gapful number since it is divisible by the number (22) 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 28935640272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46911283200).

28935640272 is an abundant number, since it is smaller than the sum of its proper divisors (64886926128).

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

28935640272 is a wasteful number, since it uses less digits than its factorization.

28935640272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52721 (or 52715 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 28935640272 in words is "twenty-eight billion, nine hundred thirty-five million, six hundred forty thousand, two hundred seventy-two".