3280072 has 8 divisors (see below), whose sum is σ = 6150150. Its totient is φ = 1640032.

The previous prime is 3280061. The next prime is 3280073. The reversal of 3280072 is 2700823.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2268036 + 1012036 = 1506^2 + 1006^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (3280073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204997 + ... + 205012.

Almost surely, 2^3280072 is an apocalyptic number.

It is an amenable number.

3280072 is a deficient number, since it is larger than the sum of its proper divisors (2870078).

3280072 is a wasteful number, since it uses less digits than its factorization.

3280072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410015 (or 410011 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 3280072 is about 1811.0969051931. The cubic root of 3280072 is about 148.5802639857.

Adding to 3280072 its reverse (2700823), we get a palindrome (5980895).

The spelling of 3280072 in words is "three million, two hundred eighty thousand, seventy-two".