170493408 has 144 divisors (see below), whose sum is σ = 520097760. Its totient is φ = 52789248.

The previous prime is 170493361. The next prime is 170493413. The reversal of 170493408 is 804394071.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474733 + ... + 475091.

It is an arithmetic number, because the mean of its divisors is an integer number (3611790).

Almost surely, 2^170493408 is an apocalyptic number.

170493408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 170493408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260048880).

170493408 is an abundant number, since it is smaller than the sum of its proper divisors (349604352).

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

170493408 is a wasteful number, since it uses less digits than its factorization.

170493408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 170493408 is about 13057.3124340348. The cubic root of 170493408 is about 554.5012514733.

The spelling of 170493408 in words is "one hundred seventy million, four hundred ninety-three thousand, four hundred eight".