52403240 has 32 divisors (see below), whose sum is σ = 120653280. Its totient is φ = 20473152.

The previous prime is 52403213. The next prime is 52403243. The reversal of 52403240 is 4230425.

52403240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (52403243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13514 + ... + 16953.

It is an arithmetic number, because the mean of its divisors is an integer number (3770415).

Almost surely, 2^52403240 is an apocalyptic number.

It is an amenable number.

52403240 is an abundant number, since it is smaller than the sum of its proper divisors (68250040).

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

52403240 is a wasteful number, since it uses less digits than its factorization.

52403240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30521 (or 30517 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 52403240 is about 7239.0082193626. The cubic root of 52403240 is about 374.2134387513.

Adding to 52403240 its reverse (4230425), we get a palindrome (56633665).

The spelling of 52403240 in words is "fifty-two million, four hundred three thousand, two hundred forty".