3721788 has 72 divisors (see below), whose sum is σ = 11170432. Its totient is φ = 1061424.

The previous prime is 3721787. The next prime is 3721799. The reversal of 3721788 is 8871273.

3721788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6531 + ... + 7077.

Almost surely, 2^3721788 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 3721788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5585216).

3721788 is an abundant number, since it is smaller than the sum of its proper divisors (7448644).

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

3721788 is a wasteful number, since it uses less digits than its factorization.

3721788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 559 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 3721788 is about 1929.1936139227. The cubic root of 3721788 is about 154.9710386403.

The spelling of 3721788 in words is "three million, seven hundred twenty-one thousand, seven hundred eighty-eight".