3162640 has 40 divisors (see below), whose sum is σ = 7921368. Its totient is φ = 1167360.

The previous prime is 3162637. The next prime is 3162641. The reversal of 3162640 is 462613.

It can be written as a sum of positive squares in 4 ways, for example, as 589824 + 2572816 = 768^2 + 1604^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (3162641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481 + ... + 2560.

Almost surely, 2^3162640 is an apocalyptic number.

It is an amenable number.

3162640 is an abundant number, since it is smaller than the sum of its proper divisors (4758728).

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

3162640 is a wasteful number, since it uses less digits than its factorization.

3162640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067 (or 3061 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 3162640 is about 1778.3812864512. The cubic root of 3162640 is about 146.7855326565.

The spelling of 3162640 in words is "three million, one hundred sixty-two thousand, six hundred forty".