172730136 has 16 divisors (see below), whose sum is σ = 431825400. Its totient is φ = 57576704.

The previous prime is 172730113. The next prime is 172730137. The reversal of 172730136 is 631037271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172730137) 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 3 ways as a sum of consecutive naturals, for example, 3598521 + ... + 3598568.

Almost surely, 2^172730136 is an apocalyptic number.

It is an amenable number.

172730136 is an abundant number, since it is smaller than the sum of its proper divisors (259095264).

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

172730136 is a wasteful number, since it uses less digits than its factorization.

172730136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7197098 (or 7197094 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 172730136 is about 13142.6837441978. The cubic root of 172730136 is about 556.9155851088.

The spelling of 172730136 in words is "one hundred seventy-two million, seven hundred thirty thousand, one hundred thirty-six".