3201990 has 64 divisors (see below), whose sum is σ = 8681472. Its totient is φ = 748800.

The previous prime is 3201983. The next prime is 3202019. The reversal of 3201990 is 991023.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3201990.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10074 + ... + 10386.

It is an arithmetic number, because the mean of its divisors is an integer number (135648).

Almost surely, 2^3201990 is an apocalyptic number.

3201990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3201990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4340736).

3201990 is an abundant number, since it is smaller than the sum of its proper divisors (5479482).

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

3201990 is a wasteful number, since it uses less digits than its factorization.

3201990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365.

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

The square root of 3201990 is about 1789.4105174610. The cubic root of 3201990 is about 147.3918003769.

The spelling of 3201990 in words is "three million, two hundred one thousand, nine hundred ninety".