3920380 has 24 divisors (see below), whose sum is σ = 8280720. Its totient is φ = 1559040.

The previous prime is 3920377. The next prime is 3920383. The reversal of 3920380 is 830293.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3920377) and next prime (3920383).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920383) 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, 3756 + ... + 4684.

It is an arithmetic number, because the mean of its divisors is an integer number (345030).

Almost surely, 2^3920380 is an apocalyptic number.

It is an amenable number.

3920380 is an abundant number, since it is smaller than the sum of its proper divisors (4360340).

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

3920380 is a wasteful number, since it uses less digits than its factorization.

3920380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1147 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3920380 is about 1979.9949494885. The cubic root of 3920380 is about 157.6797980284.

The spelling of 3920380 in words is "three million, nine hundred twenty thousand, three hundred eighty".