3550638240 has 384 divisors, whose sum is σ = 12844742400. Its totient is φ = 927148032.

The previous prime is 3550638233. The next prime is 3550638257. The reversal of 3550638240 is 428360553.

It is a happy number.

3550638240 is a `hidden beast` number, since 3 + 550 + 63 + 8 + 2 + 40 = 666.

It is a super-2 number, since 2×3550638240² = 25214063822700595200, which contains 22 as substring.

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 = 3550638195 and 3550638204.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 25544091 + ... + 25544229.

It is an arithmetic number, because the mean of its divisors is an integer number (33449850).

Almost surely, 2^3550638240 is an apocalyptic number.

3550638240 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 3550638240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6422371200).

3550638240 is an abundant number, since it is smaller than the sum of its proper divisors (9294104160).

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

3550638240 is an equidigital number, since it uses as much as digits as its factorization.

3550638240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 3550638240 is about 59587.2321894548. The cubic root of 3550638240 is about 1525.5817169790.

Adding to 3550638240 its reverse (428360553), we get a palindrome (3978998793).

The spelling of 3550638240 in words is "three billion, five hundred fifty million, six hundred thirty-eight thousand, two hundred forty".