3823720 has 32 divisors (see below), whose sum is σ = 8692200. Its totient is φ = 1513728.

The previous prime is 3823717. The next prime is 3823723. The reversal of 3823720 is 273283.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3823717) and next prime (3823723).

It can be written as a sum of positive squares in 4 ways, for example, as 3709476 + 114244 = 1926^2 + 338^2 .

It is not an unprimeable number, because it can be changed into a prime (3823723) 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, 3922 + ... + 4798.

Almost surely, 2^3823720 is an apocalyptic number.

It is an amenable number.

3823720 is an abundant number, since it is smaller than the sum of its proper divisors (4868480).

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

3823720 is a wasteful number, since it uses less digits than its factorization.

3823720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 3823720 is about 1955.4334557842. The cubic root of 3823720 is about 156.3730934018.

The spelling of 3823720 in words is "three million, eight hundred twenty-three thousand, seven hundred twenty".