172243630 has 16 divisors (see below), whose sum is σ = 333887904. Its totient is φ = 63597600.

The previous prime is 172243543. The next prime is 172243649. The reversal of 172243630 is 36342271.

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, 662346 + ... + 662605.

It is an arithmetic number, because the mean of its divisors is an integer number (20867994).

Almost surely, 2^172243630 is an apocalyptic number.

172243630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172243630 is a deficient number, since it is larger than the sum of its proper divisors (161644274).

172243630 is a wasteful number, since it uses less digits than its factorization.

172243630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324971.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 172243630 is about 13124.1620684903. The cubic root of 172243630 is about 556.3922300941.

The spelling of 172243630 in words is "one hundred seventy-two million, two hundred forty-three thousand, six hundred thirty".