3700720 has 40 divisors (see below), whose sum is σ = 8686944. Its totient is φ = 1466112.

The previous prime is 3700717. The next prime is 3700727. The reversal of 3700720 is 270073.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3700727) 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 7 ways as a sum of consecutive naturals, for example, 13222 + ... + 13498.

Almost surely, 2^3700720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3700720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4343472).

3700720 is an abundant number, since it is smaller than the sum of its proper divisors (4986224).

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

3700720 is a wasteful number, since it uses less digits than its factorization.

3700720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 19.

The square root of 3700720 is about 1923.7255521513. The cubic root of 3700720 is about 154.6780692479.

Adding to 3700720 its reverse (270073), we get a palindrome (3970793).

The spelling of 3700720 in words is "three million, seven hundred thousand, seven hundred twenty".