170268990 has 16 divisors (see below), whose sum is σ = 408645648. Its totient is φ = 45405056.

The previous prime is 170268979. The next prime is 170269003. The reversal of 170268990 is 99862071.

170268990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 2837787 + ... + 2837846.

It is an arithmetic number, because the mean of its divisors is an integer number (25540353).

Almost surely, 2^170268990 is an apocalyptic number.

170268990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

170268990 is an abundant number, since it is smaller than the sum of its proper divisors (238376658).

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

170268990 is a wasteful number, since it uses less digits than its factorization.

170268990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675643.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 170268990 is about 13048.7160287900. The cubic root of 170268990 is about 554.2578506622.

The spelling of 170268990 in words is "one hundred seventy million, two hundred sixty-eight thousand, nine hundred ninety".