427770 has 72 divisors (see below), whose sum is σ = 1307124. Its totient is φ = 96768.

The previous prime is 427751. The next prime is 427781. The reversal of 427770 is 77724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 423801 + 3969 = 651^2 + 63^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4362 + ... + 4458.

2⁴²⁷⁷⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653562).

427770 is an abundant number, since it is smaller than the sum of its proper divisors (879354).

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

427770 is a wasteful number, since it uses less digits than its factorization.

427770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 427770 is about 654.0412831007. The cubic root of 427770 is about 75.3477187311.

The spelling of 427770 in words is "four hundred twenty-seven thousand, seven hundred seventy", and thus it is an iban number.