4021626340 has 24 divisors (see below), whose sum is σ = 8447104512. Its totient is φ = 1608328800.

The previous prime is 4021626331. The next prime is 4021626341. The reversal of 4021626340 is 436261204.

It is a junction number, because it is equal to n+sod(n) for n = 4021626299 and 4021626308.

It is not an unprimeable number, because it can be changed into a prime (4021626341) 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 7 ways as a sum of consecutive naturals, for example, 99837 + ... + 134203.

It is an arithmetic number, because the mean of its divisors is an integer number (351962688).

Almost surely, 2^4021626340 is an apocalyptic number.

It is an amenable number.

4021626340 is an abundant number, since it is smaller than the sum of its proper divisors (4425478172).

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

4021626340 is a wasteful number, since it uses less digits than its factorization.

4021626340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40227 (or 40225 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 4021626340 is about 63416.2939629871. The cubic root of 4021626340 is about 1590.2567179068.

Adding to 4021626340 its reverse (436261204), we get a palindrome (4457887544).

The spelling of 4021626340 in words is "four billion, twenty-one million, six hundred twenty-six thousand, three hundred forty".