420830783898 has 192 divisors, whose sum is σ = 1035509329920. Its totient is φ = 111656060928.

The previous prime is 420830783897. The next prime is 420830783911. The reversal of 420830783898 is 898387038024.

It is not an unprimeable number, because it can be changed into a prime (420830783897) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 511337115 + ... + 511337937.

It is an arithmetic number, because the mean of its divisors is an integer number (5393277760).

Almost surely, 2^420830783898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420830783898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517754664960).

420830783898 is an abundant number, since it is smaller than the sum of its proper divisors (614678546022).

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

420830783898 is a wasteful number, since it uses less digits than its factorization.

420830783898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 420830783898 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, eight hundred ninety-eight".