39624680452 has 72 divisors (see below), whose sum is σ = 85743685944. Its totient is φ = 15920529408.

The previous prime is 39624680441. The next prime is 39624680453. The reversal of 39624680452 is 25408642693.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20216289856 + 19408390596 = 142184^2 + 139314^2 .

It is a super-2 number, since 2×39624680452² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 39624680396 and 39624680405.

It is not an unprimeable number, because it can be changed into a prime (39624680453) 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 23 ways as a sum of consecutive naturals, for example, 833188 + ... + 879460.

It is an arithmetic number, because the mean of its divisors is an integer number (1190884527).

Almost surely, 2^39624680452 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 39624680452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42871842972).

39624680452 is an abundant number, since it is smaller than the sum of its proper divisors (46119005492).

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

39624680452 is a wasteful number, since it uses less digits than its factorization.

39624680452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46565 (or 46556 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 39624680452 in words is "thirty-nine billion, six hundred twenty-four million, six hundred eighty thousand, four hundred fifty-two".