170728152 has 48 divisors (see below), whose sum is σ = 496508760. Its totient is φ = 48779136.

The previous prime is 170728147. The next prime is 170728163. The reversal of 170728152 is 251827071.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 71413 + ... + 73764.

Almost surely, 2^170728152 is an apocalyptic number.

170728152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

170728152 is an abundant number, since it is smaller than the sum of its proper divisors (325780608).

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

170728152 is a wasteful number, since it uses less digits than its factorization.

170728152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145200 (or 145189 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 170728152 is about 13066.2983281418. The cubic root of 170728152 is about 554.7556232782.

The spelling of 170728152 in words is "one hundred seventy million, seven hundred twenty-eight thousand, one hundred fifty-two".