420208536 has 64 divisors (see below), whose sum is σ = 1148929920. Its totient is φ = 127013120.

The previous prime is 420208531. The next prime is 420208571. The reversal of 420208536 is 635802024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420208531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115156 + ... + 118748.

It is an arithmetic number, because the mean of its divisors is an integer number (17952030).

Almost surely, 2^420208536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420208536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574464960).

420208536 is an abundant number, since it is smaller than the sum of its proper divisors (728721384).

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

420208536 is a wasteful number, since it uses less digits than its factorization.

420208536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056 (or 4052 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 420208536 is about 20498.9886579802. The cubic root of 420208536 is about 749.0111626183.

The spelling of 420208536 in words is "four hundred twenty million, two hundred eight thousand, five hundred thirty-six".