2272791987 has 16 divisors (see below), whose sum is σ = 3367910560. Its totient is φ = 1514829600.

The previous prime is 2272791979. The next prime is 2272792013. The reversal of 2272791987 is 7891972722.

It is a happy number.

2272791987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2272791987 - 2³ = 2272791979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2272791907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149937 + ... + 164397.

It is an arithmetic number, because the mean of its divisors is an integer number (210494410).

Almost surely, 2^2272791987 is an apocalyptic number.

2272791987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2272791987 is a deficient number, since it is larger than the sum of its proper divisors (1095118573).

2272791987 is a wasteful number, since it uses less digits than its factorization.

2272791987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20291 (or 20285 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 2272791987 is about 47673.8081864665. The cubic root of 2272791987 is about 1314.7804260698.

It can be divided in two parts, 2272791 and 987, that added together give a triangular number (2273778 = T₂₁₃₂).

The spelling of 2272791987 in words is "two billion, two hundred seventy-two million, seven hundred ninety-one thousand, nine hundred eighty-seven".