172935642 has 32 divisors (see below), whose sum is σ = 390329280. Its totient is φ = 50597120.

The previous prime is 172935641. The next prime is 172935649. The reversal of 172935642 is 246539271.

It is a self number, because there is not a number n which added to its sum of digits gives 172935642.

It is not an unprimeable number, because it can be changed into a prime (172935641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43263 + ... + 47090.

It is an arithmetic number, because the mean of its divisors is an integer number (12197790).

Almost surely, 2^172935642 is an apocalyptic number.

172935642 is an abundant number, since it is smaller than the sum of its proper divisors (217393638).

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

172935642 is a wasteful number, since it uses less digits than its factorization.

172935642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90398.

The product of its digits is 90720, while the sum is 39.

The square root of 172935642 is about 13150.4996863237. The cubic root of 172935642 is about 557.1363613594.

The spelling of 172935642 in words is "one hundred seventy-two million, nine hundred thirty-five thousand, six hundred forty-two".