4427840 has 56 divisors (see below), whose sum is σ = 10725912. Its totient is φ = 1740800.

The previous prime is 4427831. The next prime is 4427849. The reversal of 4427840 is 487244.

It is an interprime number because it is at equal distance from previous prime (4427831) and next prime (4427849).

It can be written as a sum of positive squares in 4 ways, for example, as 1658944 + 2768896 = 1288^2 + 1664^2 .

It is not an unprimeable number, because it can be changed into a prime (4427849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32252 + ... + 32388.

Almost surely, 2^4427840 is an apocalyptic number.

4427840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5362956).

4427840 is an abundant number, since it is smaller than the sum of its proper divisors (6298072).

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

4427840 is a wasteful number, since it uses less digits than its factorization.

4427840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 4427840 is about 2104.2433319367. The cubic root of 4427840 is about 164.2091323688.

The spelling of 4427840 in words is "four million, four hundred twenty-seven thousand, eight hundred forty".