420863800 has 96 divisors (see below), whose sum is σ = 1122383520. Its totient is φ = 143769600.

The previous prime is 420863797. The next prime is 420863801. The reversal of 420863800 is 8368024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420863801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729112 + ... + 729688.

It is an arithmetic number, because the mean of its divisors is an integer number (11691495).

Almost surely, 2^420863800 is an apocalyptic number.

420863800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420863800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561191760).

420863800 is an abundant number, since it is smaller than the sum of its proper divisors (701519720).

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

420863800 is a wasteful number, since it uses less digits than its factorization.

420863800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 420863800 is about 20514.9652692857. The cubic root of 420863800 is about 749.4002909636.

The spelling of 420863800 in words is "four hundred twenty million, eight hundred sixty-three thousand, eight hundred".