3901620 has 24 divisors (see below), whose sum is σ = 10924704. Its totient is φ = 1040416.

The previous prime is 3901609. The next prime is 3901649. The reversal of 3901620 is 261093.

3901620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 32454 + ... + 32573.

It is an arithmetic number, because the mean of its divisors is an integer number (455196).

Almost surely, 2^3901620 is an apocalyptic number.

3901620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3901620 is an abundant number, since it is smaller than the sum of its proper divisors (7023084).

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

3901620 is a wasteful number, since it uses less digits than its factorization.

3901620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65039 (or 65037 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 3901620 is about 1975.2518826722. The cubic root of 3901620 is about 157.4278833357.

The spelling of 3901620 in words is "three million, nine hundred one thousand, six hundred twenty".