420726860 has 24 divisors (see below), whose sum is σ = 885318000. Its totient is φ = 167949504.

The previous prime is 420726853. The next prime is 420726869. The reversal of 420726860 is 68627024.

It is a super-2 number, since 2×420726860² = 354022181450919200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 420726860.

It is not an unprimeable number, because it can be changed into a prime (420726869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11099 + ... + 31058.

It is an arithmetic number, because the mean of its divisors is an integer number (36888250).

Almost surely, 2^420726860 is an apocalyptic number.

It is an amenable number.

420726860 is an abundant number, since it is smaller than the sum of its proper divisors (464591140).

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

420726860 is a wasteful number, since it uses less digits than its factorization.

420726860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42665 (or 42663 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 420726860 is about 20511.6274342140. The cubic root of 420726860 is about 749.3190025846.

The spelling of 420726860 in words is "four hundred twenty million, seven hundred twenty-six thousand, eight hundred sixty".