420707898 has 64 divisors (see below), whose sum is σ = 1009680000. Its totient is φ = 129081600.

The previous prime is 420707879. The next prime is 420707909. The reversal of 420707898 is 898707024.

420707898 is a `hidden beast` number, since 420 + 70 + 78 + 98 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349698 + ... + 350898.

It is an arithmetic number, because the mean of its divisors is an integer number (15776250).

Almost surely, 2^420707898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420707898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504840000).

420707898 is an abundant number, since it is smaller than the sum of its proper divisors (588972102).

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

420707898 is a wasteful number, since it uses less digits than its factorization.

420707898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724 (or 1718 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 420707898 is about 20511.1652033716. The cubic root of 420707898 is about 749.3077452411.

The spelling of 420707898 in words is "four hundred twenty million, seven hundred seven thousand, eight hundred ninety-eight".