420867798 has 48 divisors (see below), whose sum is σ = 930963456. Its totient is φ = 126728160.

The previous prime is 420867791. The next prime is 420867809. The reversal of 420867798 is 897768024.

It is a self number, because there is not a number n which added to its sum of digits gives 420867798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420867791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43243 + ... + 52073.

It is an arithmetic number, because the mean of its divisors is an integer number (19395072).

Almost surely, 2^420867798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420867798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465481728).

420867798 is an abundant number, since it is smaller than the sum of its proper divisors (510095658).

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

420867798 is a wasteful number, since it uses less digits than its factorization.

420867798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8909 (or 8896 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 420867798 is about 20515.0627101162. The cubic root of 420867798 is about 749.4026639347.

The spelling of 420867798 in words is "four hundred twenty million, eight hundred sixty-seven thousand, seven hundred ninety-eight".