52774120728 has 192 divisors, whose sum is σ = 171186048000. Its totient is φ = 15020195904.

The previous prime is 52774120723. The next prime is 52774120769. The reversal of 52774120728 is 82702147725.

It is a super-2 number, since 2×52774120728² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52774120723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2774113 + ... + 2793071.

It is an arithmetic number, because the mean of its divisors is an integer number (891594000).

Almost surely, 2^52774120728 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 52774120728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85593024000).

52774120728 is an abundant number, since it is smaller than the sum of its proper divisors (118411927272).

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

52774120728 is a wasteful number, since it uses less digits than its factorization.

52774120728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19251 (or 19234 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 52774120728 in words is "fifty-two billion, seven hundred seventy-four million, one hundred twenty thousand, seven hundred twenty-eight".