4220202440 has 32 divisors (see below), whose sum is σ = 9498195000. Its totient is φ = 1687593984.

The previous prime is 4220202439. The next prime is 4220202487. The reversal of 4220202440 is 442020224.

It can be written as a sum of positive squares in 4 ways, for example, as 2431081636 + 1789120804 = 49306^2 + 42298^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146336 + ... + 172784.

Almost surely, 2^4220202440 is an apocalyptic number.

4220202440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4220202440 is an abundant number, since it is smaller than the sum of its proper divisors (5277992560).

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

4220202440 is a wasteful number, since it uses less digits than its factorization.

4220202440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30449 (or 30445 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4220202440 is about 64963.0852099868. The cubic root of 4220202440 is about 1616.0114295584.

Adding to 4220202440 its reverse (442020224), we get a palindrome (4662222664).

The spelling of 4220202440 in words is "four billion, two hundred twenty million, two hundred two thousand, four hundred forty".