172840230 has 40 divisors (see below), whose sum is σ = 464750352. Its totient is φ = 46090512.

The previous prime is 172840211. The next prime is 172840231. The reversal of 172840230 is 32048271.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 172840194 and 172840203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172840231) 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 19 ways as a sum of consecutive naturals, for example, 105882 + ... + 107501.

Almost surely, 2^172840230 is an apocalyptic number.

172840230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172840230 is an abundant number, since it is smaller than the sum of its proper divisors (291910122).

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

172840230 is a wasteful number, since it uses less digits than its factorization.

172840230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213402 (or 213393 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 172840230 is about 13146.8714909670. The cubic root of 172840230 is about 557.0338814756.

The spelling of 172840230 in words is "one hundred seventy-two million, eight hundred forty thousand, two hundred thirty".