4571440 has 20 divisors (see below), whose sum is σ = 10628784. Its totient is φ = 1828544.

The previous prime is 4571423. The next prime is 4571443. The reversal of 4571440 is 441754.

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

It is not an unprimeable number, because it can be changed into a prime (4571443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28492 + ... + 28651.

Almost surely, 2^4571440 is an apocalyptic number.

4571440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4571440 is an abundant number, since it is smaller than the sum of its proper divisors (6057344).

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

4571440 is a wasteful number, since it uses less digits than its factorization.

4571440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57156 (or 57150 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 4571440 is about 2138.0926079101. The cubic root of 4571440 is about 165.9654449776.

It can be divided in two parts, 45714 and 40, that added together give a palindrome (45754).

The spelling of 4571440 in words is "four million, five hundred seventy-one thousand, four hundred forty".