52806840 has 64 divisors (see below), whose sum is σ = 160025760. Its totient is φ = 13939200.

The previous prime is 52806797. The next prime is 52806851. The reversal of 52806840 is 4860825.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9942 + ... + 14298.

Almost surely, 2^52806840 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 52806840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80012880).

52806840 is an abundant number, since it is smaller than the sum of its proper divisors (107218920).

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

52806840 is a wasteful number, since it uses less digits than its factorization.

52806840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4472 (or 4468 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 52806840 is about 7266.8314966015. The cubic root of 52806840 is about 375.1716902701.

The spelling of 52806840 in words is "fifty-two million, eight hundred six thousand, eight hundred forty".