2691228672 has 176 divisors, whose sum is σ = 8695656000. Its totient is φ = 815431680.

The previous prime is 2691228667. The next prime is 2691228713. The reversal of 2691228672 is 2768221962.

It is a tau number, because it is divible by the number of its divisors (176).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299704 + ... + 308552.

Almost surely, 2^2691228672 is an apocalyptic number.

2691228672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2691228672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4347828000).

2691228672 is an abundant number, since it is smaller than the sum of its proper divisors (6004427328).

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

2691228672 is a wasteful number, since it uses less digits than its factorization.

2691228672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889 (or 8865 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 2691228672 is about 51877.0534244188. The cubic root of 2691228672 is about 1390.9671291570.

The spelling of 2691228672 in words is "two billion, six hundred ninety-one million, two hundred twenty-eight thousand, six hundred seventy-two".