427740 has 24 divisors (see below), whose sum is σ = 1197840. Its totient is φ = 114048.

The previous prime is 427733. The next prime is 427751. The reversal of 427740 is 47724.

It is a self number, because there is not a number n which added to its sum of digits gives 427740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505 + ... + 3624.

It is an arithmetic number, because the mean of its divisors is an integer number (49910).

2⁴²⁷⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

427740 is an abundant number, since it is smaller than the sum of its proper divisors (770100).

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

427740 is a wasteful number, since it uses less digits than its factorization.

427740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7141 (or 7139 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 427740 is about 654.0183483665. The cubic root of 427740 is about 75.3459572826.

Subtracting from 427740 its sum of digits (24), we obtain a square (427716 = 654²).

The spelling of 427740 in words is "four hundred twenty-seven thousand, seven hundred forty", and thus it is an iban number.