427988 has 24 divisors (see below), whose sum is σ = 834624. Its totient is φ = 190400.

The previous prime is 427969. The next prime is 427991. The reversal of 427988 is 889724.

It is a congruent number.

It is an unprimeable number.

427988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 3192.

It is an arithmetic number, because the mean of its divisors is an integer number (34776).

2⁴²⁷⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

427988 is a deficient number, since it is larger than the sum of its proper divisors (406636).

427988 is a wasteful number, since it uses less digits than its factorization.

427988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 221 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 427988 is about 654.2079180200. The cubic root of 427988 is about 75.3605161169.

The spelling of 427988 in words is "four hundred twenty-seven thousand, nine hundred eighty-eight".