52427840 has 56 divisors (see below), whose sum is σ = 131429760. Its totient is φ = 19865088.

The previous prime is 52427729. The next prime is 52427857. The reversal of 52427840 is 4872425.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 52427797 and 52427806.

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, 1769 + ... + 10391.

It is an arithmetic number, because the mean of its divisors is an integer number (2346960).

Almost surely, 2^52427840 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 52427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65714880).

52427840 is an abundant number, since it is smaller than the sum of its proper divisors (79001920).

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

52427840 is a wasteful number, since it uses less digits than its factorization.

52427840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8659 (or 8649 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 52427840 is about 7240.7071477861. The cubic root of 52427840 is about 374.2719860884.

The spelling of 52427840 in words is "fifty-two million, four hundred twenty-seven thousand, eight hundred forty".