172930705 has 8 divisors (see below), whose sum is σ = 207635904. Its totient is φ = 138265200.

The previous prime is 172930687. The next prime is 172930729. The reversal of 172930705 is 507039271.

172930705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172930705 - 2⁵ = 172930673 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700 + ... + 18610.

It is an arithmetic number, because the mean of its divisors is an integer number (25954488).

Almost surely, 2^172930705 is an apocalyptic number.

It is an amenable number.

172930705 is a deficient number, since it is larger than the sum of its proper divisors (34705199).

172930705 is a wasteful number, since it uses less digits than its factorization.

172930705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19847.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 172930705 is about 13150.3119734856. The cubic root of 172930705 is about 557.1310595636.

Adding to 172930705 its reverse (507039271), we get a palindrome (679969976).

The spelling of 172930705 in words is "one hundred seventy-two million, nine hundred thirty thousand, seven hundred five".