2991272 has 8 divisors (see below), whose sum is σ = 5608650. Its totient is φ = 1495632.

The previous prime is 2991253. The next prime is 2991277. The reversal of 2991272 is 2721992.

It can be written as a sum of positive squares in only one way, i.e., 2328676 + 662596 = 1526^2 + 814^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2991277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186947 + ... + 186962.

2^2991272 is an apocalyptic number.

It is an amenable number.

2991272 is a deficient number, since it is larger than the sum of its proper divisors (2617378).

2991272 is a wasteful number, since it uses less digits than its factorization.

2991272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373915 (or 373911 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 2991272 is about 1729.5294157660. The cubic root of 2991272 is about 144.0849550137.

The spelling of 2991272 in words is "two million, nine hundred ninety-one thousand, two hundred seventy-two".