52818240 has 112 divisors (see below), whose sum is σ = 172346112. Its totient is φ = 13694976.

The previous prime is 52818229. The next prime is 52818257. The reversal of 52818240 is 4281825.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52818198 and 52818207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34777 + ... + 36263.

Almost surely, 2^52818240 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 52818240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86173056).

52818240 is an abundant number, since it is smaller than the sum of its proper divisors (119527872).

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

52818240 is a wasteful number, since it uses less digits than its factorization.

52818240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544 (or 1534 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 52818240 is about 7267.6158401501. The cubic root of 52818240 is about 375.1986858230.

The spelling of 52818240 in words is "fifty-two million, eight hundred eighteen thousand, two hundred forty".