4220860820 has 24 divisors (see below), whose sum is σ = 9669608928. Its totient is φ = 1534858400.

The previous prime is 4220860807. The next prime is 4220860837. The reversal of 4220860820 is 280680224.

It is a happy number.

It is a super-2 number, since 2×4220860820² = 35631332123622144800, which contains 22 as substring.

It is a congruent number.

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, 9592646 + ... + 9593085.

It is an arithmetic number, because the mean of its divisors is an integer number (402900372).

Almost surely, 2^4220860820 is an apocalyptic number.

It is an amenable number.

4220860820 is an abundant number, since it is smaller than the sum of its proper divisors (5448748108).

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

4220860820 is a wasteful number, since it uses less digits than its factorization.

4220860820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19185751 (or 19185749 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 4220860820 is about 64968.1523517485. The cubic root of 4220860820 is about 1616.0954614105.

The spelling of 4220860820 in words is "four billion, two hundred twenty million, eight hundred sixty thousand, eight hundred twenty".