52326440 has 64 divisors (see below), whose sum is σ = 123552000. Its totient is φ = 19918080.

The previous prime is 52326433. The next prime is 52326467. The reversal of 52326440 is 4462325.

It is an unprimeable number.

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, 91355 + ... + 91925.

It is an arithmetic number, because the mean of its divisors is an integer number (1930500).

Almost surely, 2^52326440 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 52326440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61776000).

52326440 is an abundant number, since it is smaller than the sum of its proper divisors (71225560).

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

52326440 is a wasteful number, since it uses less digits than its factorization.

52326440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 52326440 is about 7233.7016803294. The cubic root of 52326440 is about 374.0305388429.

Adding to 52326440 its reverse (4462325), we get a palindrome (56788765).

The spelling of 52326440 in words is "fifty-two million, three hundred twenty-six thousand, four hundred forty".