4057820 has 24 divisors (see below), whose sum is σ = 9177504. Its totient is φ = 1498176.

The previous prime is 4057813. The next prime is 4057829. The reversal of 4057820 is 287504.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 4057820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4057829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7544 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (382396).

Almost surely, 2^4057820 is an apocalyptic number.

It is an amenable number.

4057820 is an abundant number, since it is smaller than the sum of its proper divisors (5119684).

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

4057820 is a wasteful number, since it uses less digits than its factorization.

4057820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15629 (or 15627 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 4057820 is about 2014.4031374082. The cubic root of 4057820 is about 159.5013118867.

The spelling of 4057820 in words is "four million, fifty-seven thousand, eight hundred twenty".