4151440 has 20 divisors (see below), whose sum is σ = 9652284. Its totient is φ = 1660544.

The previous prime is 4151423. The next prime is 4151461. The reversal of 4151440 is 441514.

4151440 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 2 ways, for example, as 824464 + 3326976 = 908^2 + 1824^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 25867 + ... + 26026.

Almost surely, 2^4151440 is an apocalyptic number.

4151440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4151440 is an abundant number, since it is smaller than the sum of its proper divisors (5500844).

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

4151440 is a wasteful number, since it uses less digits than its factorization.

4151440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51906 (or 51900 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 4151440 is about 2037.5082821918. The cubic root of 4151440 is about 160.7186423745.

Adding to 4151440 its reverse (441514), we get a palindrome (4592954).

The spelling of 4151440 in words is "four million, one hundred fifty-one thousand, four hundred forty".