52760240 has 80 divisors (see below), whose sum is σ = 133720608. Its totient is φ = 19243008.

The previous prime is 52760221. The next prime is 52760249. The reversal of 52760240 is 4206725.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (52760249) by changing a digit.

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, 100619 + ... + 101141.

Almost surely, 2^52760240 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 52760240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66860304).

52760240 is an abundant number, since it is smaller than the sum of its proper divisors (80960368).

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

52760240 is a wasteful number, since it uses less digits than its factorization.

52760240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 52760240 is about 7263.6244396307. The cubic root of 52760240 is about 375.0612996087.

Adding to 52760240 its reverse (4206725), we get a palindrome (56966965).

The spelling of 52760240 in words is "fifty-two million, seven hundred sixty thousand, two hundred forty".