2640072 has 32 divisors (see below), whose sum is σ = 6763680. Its totient is φ = 858240.

The previous prime is 2640067. The next prime is 2640137. The reversal of 2640072 is 2700462.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (211365).

2^2640072 is an apocalyptic number.

It is an amenable number.

2640072 is an abundant number, since it is smaller than the sum of its proper divisors (4123608).

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

2640072 is a wasteful number, since it uses less digits than its factorization.

2640072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2729 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2640072 is about 1624.8298372445. The cubic root of 2640072 is about 138.2097210294.

The spelling of 2640072 in words is "two million, six hundred forty thousand, seventy-two".