52798140 has 72 divisors (see below), whose sum is σ = 160746768. Its totient is φ = 14027520.

The previous prime is 52798121. The next prime is 52798153. The reversal of 52798140 is 4189725.

52798140 is a `hidden beast` number, since 527 + 98 + 1 + 40 = 666.

52798140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52798095 and 52798104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93499 + ... + 94061.

It is an arithmetic number, because the mean of its divisors is an integer number (2232594).

Almost surely, 2^52798140 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 52798140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80373384).

52798140 is an abundant number, since it is smaller than the sum of its proper divisors (107948628).

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

52798140 is a wasteful number, since it uses less digits than its factorization.

52798140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 52798140 is about 7266.2328616691. The cubic root of 52798140 is about 375.1510857867.

The spelling of 52798140 in words is "fifty-two million, seven hundred ninety-eight thousand, one hundred forty".