52064240 has 40 divisors (see below), whose sum is σ = 122523408. Its totient is φ = 20572160.

The previous prime is 52064231. The next prime is 52064261. The reversal of 52064240 is 4246025.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 2720 + ... + 10560.

Almost surely, 2^52064240 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 52064240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61261704).

52064240 is an abundant number, since it is smaller than the sum of its proper divisors (70459168).

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

52064240 is a wasteful number, since it uses less digits than its factorization.

52064240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937 (or 7931 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 52064240 is about 7215.5554186771. Note that the first 3 decimals coincide. The cubic root of 52064240 is about 373.4047553264.

The spelling of 52064240 in words is "fifty-two million, sixty-four thousand, two hundred forty".