170671920 has 40 divisors (see below), whose sum is σ = 529083696. Its totient is φ = 45512448.

The previous prime is 170671903. The next prime is 170671933. The reversal of 170671920 is 29176071.

It is a tau number, because it is divible by the number of its divisors (40).

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, 355327 + ... + 355806.

Almost surely, 2^170671920 is an apocalyptic number.

170671920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170671920 is an abundant number, since it is smaller than the sum of its proper divisors (358411776).

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

170671920 is a wasteful number, since it uses less digits than its factorization.

170671920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711149 (or 711143 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 170671920 is about 13064.1463555795. The cubic root of 170671920 is about 554.6947107626.

The spelling of 170671920 in words is "one hundred seventy million, six hundred seventy-one thousand, nine hundred twenty".