2791072 has 12 divisors (see below), whose sum is σ = 5494986. Its totient is φ = 1395520.

The previous prime is 2791069. The next prime is 2791091. The reversal of 2791072 is 2701972.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1527696 + 1263376 = 1236^2 + 1124^2 .

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 2791072.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43579 + ... + 43642.

2^2791072 is an apocalyptic number.

It is an amenable number.

2791072 is a deficient number, since it is larger than the sum of its proper divisors (2703914).

2791072 is an equidigital number, since it uses as much as digits as its factorization.

2791072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87231 (or 87223 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2791072 is about 1670.6501728369. The cubic root of 2791072 is about 140.7960097010.

The spelling of 2791072 in words is "two million, seven hundred ninety-one thousand, seventy-two".