6450222240 has 384 divisors, whose sum is σ = 28147875840. Its totient is φ = 1340236800.

The previous prime is 6450222221. The next prime is 6450222241. The reversal of 6450222240 is 422220546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6450222241) 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, 322945 + ... + 342335.

It is an arithmetic number, because the mean of its divisors is an integer number (73301760).

Almost surely, 2^6450222240 is an apocalyptic number.

6450222240 is a gapful number since it is divisible by the number (60) 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 6450222240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14073937920).

6450222240 is an abundant number, since it is smaller than the sum of its proper divisors (21697653600).

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

6450222240 is a wasteful number, since it uses less digits than its factorization.

6450222240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19433 (or 19419 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 6450222240 is about 80313.2756149318. The cubic root of 6450222240 is about 1861.4793641683.

Adding to 6450222240 its reverse (422220546), we get a palindrome (6872442786).

The spelling of 6450222240 in words is "six billion, four hundred fifty million, two hundred twenty-two thousand, two hundred forty".