1172240644 has 81 divisors (see below), whose sum is σ = 2344135647. Its totient is φ = 512748288.

The previous prime is 1172240617. The next prime is 1172240647. The reversal of 1172240644 is 4460422711.

The square root of 1172240644 is 34238.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 293711044 + 878529600 = 17138^2 + 29640^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172240647) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22117722 + ... + 22117774.

Almost surely, 2^1172240644 is an apocalyptic number.

1172240644 is the 34238-th square number.

It is an amenable number.

1172240644 is a deficient number, since it is larger than the sum of its proper divisors (1171895003).

1172240644 is a wasteful number, since it uses less digits than its factorization.

1172240644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The cubic root of 1172240644 is about 1054.4004721691.

The spelling of 1172240644 in words is "one billion, one hundred seventy-two million, two hundred forty thousand, six hundred forty-four".