4557440 has 32 divisors (see below), whose sum is σ = 10896660. Its totient is φ = 1822720.

The previous prime is 4557439. The next prime is 4557461. The reversal of 4557440 is 447554.

It can be written as a sum of positive squares in 2 ways, for example, as 3904576 + 652864 = 1976^2 + 808^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2921 + ... + 4200.

Almost surely, 2^4557440 is an apocalyptic number.

4557440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4557440 is an abundant number, since it is smaller than the sum of its proper divisors (6339220).

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

4557440 is an equidigital number, since it uses as much as digits as its factorization.

4557440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7140 (or 7128 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 4557440 is about 2134.8161513348. The cubic root of 4557440 is about 165.7958490960.

The spelling of 4557440 in words is "four million, five hundred fifty-seven thousand, four hundred forty".