170730138 has 16 divisors (see below), whose sum is σ = 342994176. Its totient is φ = 56654400.

The previous prime is 170730107. The next prime is 170730149. The reversal of 170730138 is 831037071.

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, 62463 + ... + 65138.

It is an arithmetic number, because the mean of its divisors is an integer number (21437136).

Almost surely, 2^170730138 is an apocalyptic number.

170730138 is an abundant number, since it is smaller than the sum of its proper divisors (172264038).

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

170730138 is a wasteful number, since it uses less digits than its factorization.

170730138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127829.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 170730138 is about 13066.3743249610. The cubic root of 170730138 is about 554.7577743400.

The spelling of 170730138 in words is "one hundred seventy million, seven hundred thirty thousand, one hundred thirty-eight".