2147695872 has 288 divisors, whose sum is σ = 6907084800. Its totient is φ = 591575040.

The previous prime is 2147695861. The next prime is 2147695873. The reversal of 2147695872 is 2785967412.

It is a happy number.

It is a super-2 number, since 2×2147695872² = 9225195117211680768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147695873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8166013 + ... + 8166275.

Almost surely, 2^2147695872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2147695872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3453542400).

2147695872 is an abundant number, since it is smaller than the sum of its proper divisors (4759388928).

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

2147695872 is an equidigital number, since it uses as much as digits as its factorization.

2147695872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 306 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 2147695872 is about 46343.2397659033. The cubic root of 2147695872 is about 1290.2016534707.

The spelling of 2147695872 in words is "two billion, one hundred forty-seven million, six hundred ninety-five thousand, eight hundred seventy-two".