172000822 has 16 divisors (see below), whose sum is σ = 302051232. Its totient is φ = 71916480.

The previous prime is 172000729. The next prime is 172000823. The reversal of 172000822 is 228000271.

It is a junction number, because it is equal to n+sod(n) for n = 172000793 and 172000802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172000823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149253 + ... + 150400.

It is an arithmetic number, because the mean of its divisors is an integer number (18878202).

Almost surely, 2^172000822 is an apocalyptic number.

172000822 is a deficient number, since it is larger than the sum of its proper divisors (130050410).

172000822 is a wasteful number, since it uses less digits than its factorization.

172000822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299703.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 172000822 is about 13114.9083870228. The cubic root of 172000822 is about 556.1306625784.

The spelling of 172000822 in words is "one hundred seventy-two million, eight hundred twenty-two", and thus it is an aban number.