52840736 has 48 divisors (see below), whose sum is σ = 115093944. Its totient is φ = 23721984.

The previous prime is 52840727. The next prime is 52840741. The reversal of 52840736 is 63704825.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 42981136 + 9859600 = 6556^2 + 3140^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52840696 and 52840705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13676 + ... + 17108.

Almost surely, 2^52840736 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 52840736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57546972).

52840736 is an abundant number, since it is smaller than the sum of its proper divisors (62253208).

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

52840736 is a wasteful number, since it uses less digits than its factorization.

52840736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493 (or 3485 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 52840736 is about 7269.1633631388. The cubic root of 52840736 is about 375.2519456541.

The spelling of 52840736 in words is "fifty-two million, eight hundred forty thousand, seven hundred thirty-six".