3727720 has 32 divisors (see below), whose sum is σ = 8595720. Its totient is φ = 1454080.

The previous prime is 3727699. The next prime is 3727721. The reversal of 3727720 is 277273.

It can be written as a sum of positive squares in 4 ways, for example, as 2802276 + 925444 = 1674^2 + 962^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3727721) 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, 504 + ... + 2776.

Almost surely, 2^3727720 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 3727720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4297860).

3727720 is an abundant number, since it is smaller than the sum of its proper divisors (4868000).

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

3727720 is a wasteful number, since it uses less digits than its factorization.

3727720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 3727720 is about 1930.7304317278. The cubic root of 3727720 is about 155.0533288575.

The spelling of 3727720 in words is "three million, seven hundred twenty-seven thousand, seven hundred twenty".