4528621440 has 512 divisors, whose sum is σ = 18976896000. Its totient is φ = 998645760.

The previous prime is 4528621423. The next prime is 4528621441. The reversal of 4528621440 is 441268254.

4528621440 is a `hidden beast` number, since 4 + 5 + 28 + 621 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4528621395 and 4528621404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4528621441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3507195 + ... + 3508485.

It is an arithmetic number, because the mean of its divisors is an integer number (37064250).

Almost surely, 2^4528621440 is an apocalyptic number.

4528621440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4528621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9488448000).

4528621440 is an abundant number, since it is smaller than the sum of its proper divisors (14448274560).

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

4528621440 is a wasteful number, since it uses less digits than its factorization.

4528621440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 4528621440 is about 67295.0328033206. The cubic root of 4528621440 is about 1654.4564487073.

Adding to 4528621440 its reverse (441268254), we get a palindrome (4969889694).

The spelling of 4528621440 in words is "four billion, five hundred twenty-eight million, six hundred twenty-one thousand, four hundred forty".