4023780 has 48 divisors (see below), whose sum is σ = 11356800. Its totient is φ = 1064448.

The previous prime is 4023751. The next prime is 4023791. The reversal of 4023780 is 873204.

It is a self number, because there is not a number n which added to its sum of digits gives 4023780.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11772 + ... + 12108.

It is an arithmetic number, because the mean of its divisors is an integer number (236600).

Almost surely, 2^4023780 is an apocalyptic number.

It is an amenable number.

4023780 is an abundant number, since it is smaller than the sum of its proper divisors (7333020).

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

4023780 is a wasteful number, since it uses less digits than its factorization.

4023780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 4023780 is about 2005.9361904109. The cubic root of 4023780 is about 159.0540538499.

Adding to 4023780 its reverse (873204), we get a palindrome (4896984).

The spelling of 4023780 in words is "four million, twenty-three thousand, seven hundred eighty".