172420230 has 16 divisors (see below), whose sum is σ = 413808624. Its totient is φ = 45978720.

The previous prime is 172420219. The next prime is 172420247. The reversal of 172420230 is 32024271.

It is a junction number, because it is equal to n+sod(n) for n = 172420197 and 172420206.

It is a congruent number.

It is an unprimeable number.

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, 2873641 + ... + 2873700.

It is an arithmetic number, because the mean of its divisors is an integer number (25863039).

Almost surely, 2^172420230 is an apocalyptic number.

172420230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172420230 is an abundant number, since it is smaller than the sum of its proper divisors (241388394).

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

172420230 is a wasteful number, since it uses less digits than its factorization.

172420230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747351.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 172420230 is about 13130.8883934028. Note that the first 3 decimals coincide. The cubic root of 172420230 is about 556.5823199601.

The spelling of 172420230 in words is "one hundred seventy-two million, four hundred twenty thousand, two hundred thirty".