4220323640 has 64 divisors (see below), whose sum is σ = 10443807360. Its totient is φ = 1525109760.

The previous prime is 4220323621. The next prime is 4220323649. The reversal of 4220323640 is 463230224.

It is a super-2 number, since 2×4220323640² = 35622263252685699200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220323649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61901 + ... + 110780.

It is an arithmetic number, because the mean of its divisors is an integer number (163184490).

Almost surely, 2^4220323640 is an apocalyptic number.

4220323640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4220323640 is an abundant number, since it is smaller than the sum of its proper divisors (6223483720).

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

4220323640 is a wasteful number, since it uses less digits than its factorization.

4220323640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172752 (or 172748 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 4220323640 is about 64964.0180407585. The cubic root of 4220323640 is about 1616.0268994885.

Adding to 4220323640 its reverse (463230224), we get a palindrome (4683553864).

The spelling of 4220323640 in words is "four billion, two hundred twenty million, three hundred twenty-three thousand, six hundred forty".