427998 has 8 divisors (see below), whose sum is σ = 856008. Its totient is φ = 142664.

The previous prime is 427997. The next prime is 428003. The reversal of 427998 is 899724.

It is a sphenic number, since it is the product of 3 distinct primes.

427998 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35661 + ... + 35672.

It is an arithmetic number, because the mean of its divisors is an integer number (107001).

2⁴²⁷⁹⁹⁸ is an apocalyptic number.

427998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

427998 is a wasteful number, since it uses less digits than its factorization.

427998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71338.

The product of its digits is 36288, while the sum is 39.

The square root of 427998 is about 654.2155608055. The cubic root of 427998 is about 75.3611030487.

The spelling of 427998 in words is "four hundred twenty-seven thousand, nine hundred ninety-eight".