872170772 has 12 divisors (see below), whose sum is σ = 1665053376. Its totient is φ = 396441240.

The previous prime is 872170769. The next prime is 872170777. The reversal of 872170772 is 277071278.

872170772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×872170772³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872170777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9910988 + ... + 9911075.

It is an arithmetic number, because the mean of its divisors is an integer number (138754448).

Almost surely, 2^872170772 is an apocalyptic number.

It is an amenable number.

872170772 is a deficient number, since it is larger than the sum of its proper divisors (792882604).

872170772 is a wasteful number, since it uses less digits than its factorization.

872170772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19822078 (or 19822076 counting only the distinct ones).

The product of its (nonzero) digits is 76832, while the sum is 41.

The square root of 872170772 is about 29532.5375137322. The cubic root of 872170772 is about 955.4335985952.

The spelling of 872170772 in words is "eight hundred seventy-two million, one hundred seventy thousand, seven hundred seventy-two".