52642340 has 48 divisors (see below), whose sum is σ = 114960384. Its totient is φ = 20227200.

The previous prime is 52642333. The next prime is 52642349. The reversal of 52642340 is 4324625.

It is not an unprimeable number, because it can be changed into a prime (52642349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121925 + ... + 122355.

It is an arithmetic number, because the mean of its divisors is an integer number (2395008).

Almost surely, 2^52642340 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 52642340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57480192).

52642340 is an abundant number, since it is smaller than the sum of its proper divisors (62318044).

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

52642340 is a wasteful number, since it uses less digits than its factorization.

52642340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 666 counting only the distinct ones).

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

The square root of 52642340 is about 7255.5041175648. The cubic root of 52642340 is about 374.7817159265.

Adding to 52642340 its reverse (4324625), we get a palindrome (56966965).

The spelling of 52642340 in words is "fifty-two million, six hundred forty-two thousand, three hundred forty".