3250621440 has 528 divisors, whose sum is σ = 12622555296. Its totient is φ = 773160960.

The previous prime is 3250621427. The next prime is 3250621477. The reversal of 3250621440 is 441260523.

3250621440 is a `hidden beast` number, since 32 + 5 + 0 + 621 + 4 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61332454 + ... + 61332506.

Almost surely, 2^3250621440 is an apocalyptic number.

3250621440 is a gapful number since it is divisible by the number (30) 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 3250621440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6311277648).

3250621440 is an abundant number, since it is smaller than the sum of its proper divisors (9371933856).

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

3250621440 is a wasteful number, since it uses less digits than its factorization.

3250621440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 3250621440 is about 57014.2213837916. The cubic root of 3250621440 is about 1481.3424391384.

Adding to 3250621440 its reverse (441260523), we get a palindrome (3691881963).

The spelling of 3250621440 in words is "three billion, two hundred fifty million, six hundred twenty-one thousand, four hundred forty".