3901920 has 96 divisors (see below), whose sum is σ = 13426560. Its totient is φ = 944640.

The previous prime is 3901907. The next prime is 3901943. The reversal of 3901920 is 291093.

It is a happy number.

3901920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4911 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

Almost surely, 2^3901920 is an apocalyptic number.

3901920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3901920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6713280).

3901920 is an abundant number, since it is smaller than the sum of its proper divisors (9524640).

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

3901920 is a wasteful number, since it uses less digits than its factorization.

3901920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 760 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 3901920 is about 1975.3278208945. The cubic root of 3901920 is about 157.4319181687.

The spelling of 3901920 in words is "three million, nine hundred one thousand, nine hundred twenty".