2291506072 has 16 divisors (see below), whose sum is σ = 4401369000. Its totient is φ = 1117807680.

The previous prime is 2291506067. The next prime is 2291506093. The reversal of 2291506072 is 2706051922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492822 + ... + 3493477.

Almost surely, 2^2291506072 is an apocalyptic number.

It is an amenable number.

2291506072 is a deficient number, since it is larger than the sum of its proper divisors (2109862928).

2291506072 is a wasteful number, since it uses less digits than its factorization.

2291506072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986346 (or 6986342 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2291506072 is about 47869.6780018416. The cubic root of 2291506072 is about 1318.3791844904.

Adding to 2291506072 its reverse (2706051922), we get a palindrome (4997557994).

The spelling of 2291506072 in words is "two billion, two hundred ninety-one million, five hundred six thousand, seventy-two".