172071922 has 12 divisors (see below), whose sum is σ = 283705758. Its totient is φ = 78214400.

The previous prime is 172071883. The next prime is 172071937. The reversal of 172071922 is 229170271.

It is a happy number.

172071922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 168194961 + 3876961 = 12969^2 + 1969^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355279 + ... + 355762.

Almost surely, 2^172071922 is an apocalyptic number.

172071922 is a deficient number, since it is larger than the sum of its proper divisors (111633836).

172071922 is a wasteful number, since it uses less digits than its factorization.

172071922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711065 (or 711054 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 172071922 is about 13117.6187625651. The cubic root of 172071922 is about 556.2072812878.

The spelling of 172071922 in words is "one hundred seventy-two million, seventy-one thousand, nine hundred twenty-two".