3927920 has 40 divisors (see below), whose sum is σ = 9386304. Its totient is φ = 1527552.

The previous prime is 3927919. The next prime is 3927929. The reversal of 3927920 is 297293.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3927929) 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, 2297 + ... + 3623.

Almost surely, 2^3927920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3927920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4693152).

3927920 is an abundant number, since it is smaller than the sum of its proper divisors (5458384).

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

3927920 is a wasteful number, since it uses less digits than its factorization.

3927920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1371 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 3927920 is about 1981.8980801242. The cubic root of 3927920 is about 157.7808209130.

The spelling of 3927920 in words is "three million, nine hundred twenty-seven thousand, nine hundred twenty".