3720830 has 16 divisors (see below), whose sum is σ = 6727104. Its totient is φ = 1481760.

The previous prime is 3720811. The next prime is 3720839. The reversal of 3720830 is 380273.

It is a junction number, because it is equal to n+sod(n) for n = 3720796 and 3720805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720839) 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, 2024 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (420444).

Almost surely, 2^3720830 is an apocalyptic number.

3720830 is a deficient number, since it is larger than the sum of its proper divisors (3006274).

3720830 is a wasteful number, since it uses less digits than its factorization.

3720830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 3720830 is about 1928.9453076746. The cubic root of 3720830 is about 154.9577408208.

The spelling of 3720830 in words is "three million, seven hundred twenty thousand, eight hundred thirty".