3720838 has 8 divisors (see below), whose sum is σ = 6088680. Its totient is φ = 1691280.

The previous prime is 3720811. The next prime is 3720839. The reversal of 3720838 is 8380273.

3720838 = T₈₁₇ + T₈₁₈ + ... + T₈₂₇.

It is a sphenic number, since it is the product of 3 distinct primes.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84543 + ... + 84586.

It is an arithmetic number, because the mean of its divisors is an integer number (761085).

Almost surely, 2^3720838 is an apocalyptic number.

3720838 is a deficient number, since it is larger than the sum of its proper divisors (2367842).

3720838 is a wasteful number, since it uses less digits than its factorization.

3720838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169142.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 3720838 is about 1928.9473813456. The cubic root of 3720838 is about 154.9578518768.

The spelling of 3720838 in words is "three million, seven hundred twenty thousand, eight hundred thirty-eight".