2172736424 has 8 divisors (see below), whose sum is σ = 4073880810. Its totient is φ = 1086368208.

The previous prime is 2172736421. The next prime is 2172736429. The reversal of 2172736424 is 4246372712.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1149888100 + 1022848324 = 33910^2 + 31982^2 .

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 (2172736421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135796019 + ... + 135796034.

Almost surely, 2^2172736424 is an apocalyptic number.

It is an amenable number.

2172736424 is a deficient number, since it is larger than the sum of its proper divisors (1901144386).

2172736424 is a wasteful number, since it uses less digits than its factorization.

2172736424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271592059 (or 271592055 counting only the distinct ones).

The product of its digits is 112896, while the sum is 38.

The square root of 2172736424 is about 46612.6208660273. The cubic root of 2172736424 is about 1295.1965581700.

The spelling of 2172736424 in words is "two billion, one hundred seventy-two million, seven hundred thirty-six thousand, four hundred twenty-four".