3920340 has 48 divisors (see below), whose sum is σ = 11063808. Its totient is φ = 1037184.

The previous prime is 3920311. The next prime is 3920359. The reversal of 3920340 is 430293.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 13234 + ... + 13526.

It is an arithmetic number, because the mean of its divisors is an integer number (230496).

Almost surely, 2^3920340 is an apocalyptic number.

3920340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3920340 is an abundant number, since it is smaller than the sum of its proper divisors (7143468).

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

3920340 is a wasteful number, since it uses less digits than its factorization.

3920340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 3920340 is about 1979.9848484269. The cubic root of 3920340 is about 157.6792617527.

The spelling of 3920340 in words is "three million, nine hundred twenty thousand, three hundred forty".