3723720 has 256 divisors, whose sum is σ = 15482880. Its totient is φ = 691200.

The previous prime is 3723719. The next prime is 3723721. The reversal of 3723720 is 273273.

3723720 = 85² + 86² + ... + 227².

It is an interprime number because it is at equal distance from previous prime (3723719) and next prime (3723721).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3723721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120105 + ... + 120135.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

Almost surely, 2^3723720 is an apocalyptic number.

3723720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3723720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7741440).

3723720 is an abundant number, since it is smaller than the sum of its proper divisors (11759160).

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

3723720 is a wasteful number, since it uses less digits than its factorization.

3723720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 24.

The square root of 3723720 is about 1929.6942763039. The cubic root of 3723720 is about 154.9978494325.

Adding to 3723720 its reverse (273273), we get a palindrome (3996993).

The spelling of 3723720 in words is "three million, seven hundred twenty-three thousand, seven hundred twenty".