53827840 has 72 divisors (see below), whose sum is σ = 140692608. Its totient is φ = 19568640.

The previous prime is 53827801. The next prime is 53827841. The reversal of 53827840 is 4872835.

It is a self number, because there is not a number n which added to its sum of digits gives 53827840.

It is not an unprimeable number, because it can be changed into a prime (53827841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12169 + ... + 15991.

It is an arithmetic number, because the mean of its divisors is an integer number (1954064).

Almost surely, 2^53827840 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 53827840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70346304).

53827840 is an abundant number, since it is smaller than the sum of its proper divisors (86864768).

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

53827840 is a wasteful number, since it uses less digits than its factorization.

53827840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855 (or 3841 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 53827840 is about 7336.7458726604. The cubic root of 53827840 is about 377.5742058412.

The spelling of 53827840 in words is "fifty-three million, eight hundred twenty-seven thousand, eight hundred forty".