3821920 has 24 divisors (see below), whose sum is σ = 9029664. Its totient is φ = 1528704.

The previous prime is 3821911. The next prime is 3821929. The reversal of 3821920 is 291283.

3821920 is nontrivially palindromic in base 9.

It is an interprime number because it is at equal distance from previous prime (3821911) and next prime (3821929).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821929) 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, 11784 + ... + 12103.

It is an arithmetic number, because the mean of its divisors is an integer number (376236).

Almost surely, 2^3821920 is an apocalyptic number.

It is an amenable number.

3821920 is an abundant number, since it is smaller than the sum of its proper divisors (5207744).

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

3821920 is a wasteful number, since it uses less digits than its factorization.

3821920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23902 (or 23894 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 3821920 is about 1954.9731455956. The cubic root of 3821920 is about 156.3485522267.

The spelling of 3821920 in words is "three million, eight hundred twenty-one thousand, nine hundred twenty".