4020213440 has 28 divisors (see below), whose sum is σ = 9573134016. Its totient is φ = 1608085248.

The previous prime is 4020213433. The next prime is 4020213443. The reversal of 4020213440 is 443120204.

It is a super-2 number, since 2×4020213440² = 32324232206313267200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (4020213443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6281264 + ... + 6281903.

Almost surely, 2^4020213440 is an apocalyptic number.

4020213440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4020213440 is an abundant number, since it is smaller than the sum of its proper divisors (5552920576).

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

4020213440 is a wasteful number, since it uses less digits than its factorization.

4020213440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563184 (or 12563174 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 4020213440 is about 63405.1531028827. The cubic root of 4020213440 is about 1590.0704634991.

Adding to 4020213440 its reverse (443120204), we get a palindrome (4463333644).

The spelling of 4020213440 in words is "four billion, twenty million, two hundred thirteen thousand, four hundred forty".