3720019 has 4 divisors (see below), whose sum is σ = 3741696. Its totient is φ = 3698344.

The previous prime is 3720011. The next prime is 3720023. The reversal of 3720019 is 9100273.

3720019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3720019 - 2³ = 3720011 is a prime.

It is a super-2 number, since 2×3720019² = 27677082720722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720011) 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 3 ways as a sum of consecutive naturals, for example, 10579 + ... + 10924.

It is an arithmetic number, because the mean of its divisors is an integer number (935424).

Almost surely, 2^3720019 is an apocalyptic number.

3720019 is a deficient number, since it is larger than the sum of its proper divisors (21677).

3720019 is a wasteful number, since it uses less digits than its factorization.

3720019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21676.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 3720019 is about 1928.7350777129. The cubic root of 3720019 is about 154.9464816968.

The spelling of 3720019 in words is "three million, seven hundred twenty thousand, nineteen".