4138720 has 24 divisors (see below), whose sum is σ = 9778104. Its totient is φ = 1655424.

The previous prime is 4138711. The next prime is 4138723. The reversal of 4138720 is 278314.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12774 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (407421).

Almost surely, 2^4138720 is an apocalyptic number.

4138720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4138720 is an abundant number, since it is smaller than the sum of its proper divisors (5639384).

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

4138720 is a wasteful number, since it uses less digits than its factorization.

4138720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25882 (or 25874 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 4138720 is about 2034.3844277815. The cubic root of 4138720 is about 160.5543272900.

The spelling of 4138720 in words is "four million, one hundred thirty-eight thousand, seven hundred twenty".