52418340 has 240 divisors, whose sum is σ = 187830720. Its totient is φ = 12130560.

The previous prime is 52418339. The next prime is 52418369. The reversal of 52418340 is 4381425.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 400075 + ... + 400205.

It is an arithmetic number, because the mean of its divisors is an integer number (782628).

Almost surely, 2^52418340 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 52418340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93915360).

52418340 is an abundant number, since it is smaller than the sum of its proper divisors (135412380).

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

52418340 is a wasteful number, since it uses less digits than its factorization.

52418340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 52418340 is about 7240.0511047920. The cubic root of 52418340 is about 374.2493785155.

Adding to 52418340 its reverse (4381425), we get a palindrome (56799765).

The spelling of 52418340 in words is "fifty-two million, four hundred eighteen thousand, three hundred forty".