3206720 has 56 divisors (see below), whose sum is σ = 8339328. Its totient is φ = 1164800.

The previous prime is 3206717. The next prime is 3206741. The reversal of 3206720 is 276023.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3206692 and 3206701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3065 + ... + 3975.

Almost surely, 2^3206720 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 3206720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4169664).

3206720 is an abundant number, since it is smaller than the sum of its proper divisors (5132608).

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

3206720 is a wasteful number, since it uses less digits than its factorization.

3206720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 929 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 3206720 is about 1790.7316940290. The cubic root of 3206720 is about 147.4643407047.

The spelling of 3206720 in words is "three million, two hundred six thousand, seven hundred twenty".