172350220 has 24 divisors (see below), whose sum is σ = 413640864. Its totient is φ = 59091456.

The previous prime is 172350163. The next prime is 172350221. The reversal of 172350220 is 22053271.

It is a junction number, because it is equal to n+sod(n) for n = 172350191 and 172350200.

It is not an unprimeable number, because it can be changed into a prime (172350221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615397 + ... + 615676.

It is an arithmetic number, because the mean of its divisors is an integer number (17235036).

Almost surely, 2^172350220 is an apocalyptic number.

172350220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172350220 is an abundant number, since it is smaller than the sum of its proper divisors (241290644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172350220 is a wasteful number, since it uses less digits than its factorization.

172350220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231089 (or 1231087 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 172350220 is about 13128.2222711226. Note that the first 4 decimals coincide. The cubic root of 172350220 is about 556.5069776730.

The spelling of 172350220 in words is "one hundred seventy-two million, three hundred fifty thousand, two hundred twenty".