420833860 has 24 divisors (see below), whose sum is σ = 890207640. Its totient is φ = 167103744.

The previous prime is 420833851. The next prime is 420833863. The reversal of 420833860 is 68338024.

It can be written as a sum of positive squares in 4 ways, for example, as 665856 + 420168004 = 816^2 + 20498^2 .

It is a super-2 number, since 2×420833860² = 354202275444999200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420833863) 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, 74055 + ... + 79534.

It is an arithmetic number, because the mean of its divisors is an integer number (37091985).

Almost surely, 2^420833860 is an apocalyptic number.

It is an amenable number.

420833860 is an abundant number, since it is smaller than the sum of its proper divisors (469373780).

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

420833860 is a wasteful number, since it uses less digits than its factorization.

420833860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153735 (or 153733 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 420833860 is about 20514.2355451038. The cubic root of 420833860 is about 749.3825199121.

The spelling of 420833860 in words is "four hundred twenty million, eight hundred thirty-three thousand, eight hundred sixty".