52078140 has 240 divisors, whose sum is σ = 181488384. Its totient is φ = 12441600.

The previous prime is 52078111. The next prime is 52078181. The reversal of 52078140 is 4187025.

52078140 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 (27).

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 79 ways as a sum of consecutive naturals, for example, 853710 + ... + 853770.

Almost surely, 2^52078140 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 52078140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90744192).

52078140 is an abundant number, since it is smaller than the sum of its proper divisors (129410244).

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

52078140 is a wasteful number, since it uses less digits than its factorization.

52078140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 52078140 is about 7216.5185512129. The cubic root of 52078140 is about 373.4379826386.

The spelling of 52078140 in words is "fifty-two million, seventy-eight thousand, one hundred forty".