4224406640 has 20 divisors (see below), whose sum is σ = 9821745624. Its totient is φ = 1689762624.

The previous prime is 4224406639. The next prime is 4224406643. The reversal of 4224406640 is 466044224.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×4224406640² = 35691222920152179200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4224406597 and 4224406606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224406643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26402462 + ... + 26402621.

Almost surely, 2^4224406640 is an apocalyptic number.

4224406640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4224406640 is an abundant number, since it is smaller than the sum of its proper divisors (5597338984).

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

4224406640 is a wasteful number, since it uses less digits than its factorization.

4224406640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52805096 (or 52805090 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 4224406640 is about 64995.4355320433. The cubic root of 4224406640 is about 1616.5478793698.

The spelling of 4224406640 in words is "four billion, two hundred twenty-four million, four hundred six thousand, six hundred forty".