4457040 has 120 divisors (see below), whose sum is σ = 16115040. Its totient is φ = 1016064.

The previous prime is 4456997. The next prime is 4457093. The reversal of 4457040 is 407544.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4457040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11571 + ... + 11949.

It is an arithmetic number, because the mean of its divisors is an integer number (134292).

Almost surely, 2^4457040 is an apocalyptic number.

4457040 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 4457040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8057520).

4457040 is an abundant number, since it is smaller than the sum of its proper divisors (11658000).

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

4457040 is a wasteful number, since it uses less digits than its factorization.

4457040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 4457040 is about 2111.1702915682. The cubic root of 4457040 is about 164.5693083529.

The spelling of 4457040 in words is "four million, four hundred fifty-seven thousand, forty".