4051280 has 40 divisors (see below), whose sum is σ = 9541800. Its totient is φ = 1599488.

The previous prime is 4051279. The next prime is 4051309. The reversal of 4051280 is 821504.

4051280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3136 + 4048144 = 56^2 + 2012^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 6836 + ... + 7404.

It is an arithmetic number, because the mean of its divisors is an integer number (238545).

Almost surely, 2^4051280 is an apocalyptic number.

4051280 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 4051280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4770900).

4051280 is an abundant number, since it is smaller than the sum of its proper divisors (5490520).

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

4051280 is a wasteful number, since it uses less digits than its factorization.

4051280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 4051280 is about 2012.7791731832. The cubic root of 4051280 is about 159.4155762378.

Adding to 4051280 its reverse (821504), we get a palindrome (4872784).

It can be divided in two parts, 405 and 1280, that multiplied together give a square (518400 = 720²).

The spelling of 4051280 in words is "four million, fifty-one thousand, two hundred eighty".