4057644 has 12 divisors (see below), whose sum is σ = 9467864. Its totient is φ = 1352544.

The previous prime is 4057639. The next prime is 4057649. The reversal of 4057644 is 4467504.

4057644 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4057639) and next prime (4057649).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4057649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169057 + ... + 169080.

Almost surely, 2^4057644 is an apocalyptic number.

It is an amenable number.

4057644 is an abundant number, since it is smaller than the sum of its proper divisors (5410220).

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

4057644 is a wasteful number, since it uses less digits than its factorization.

4057644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338144 (or 338142 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 4057644 is about 2014.3594515379. The cubic root of 4057644 is about 159.4990058343.

The spelling of 4057644 in words is "four million, fifty-seven thousand, six hundred forty-four".