168490332 has 144 divisors (see below), whose sum is σ = 475517952. Its totient is φ = 50065920.

The previous prime is 168490307. The next prime is 168490337. The reversal of 168490332 is 233094861.

168490332 is a `hidden beast` number, since 168 + 490 + 3 + 3 + 2 = 666.

168490332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168490337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1574623 + ... + 1574729.

It is an arithmetic number, because the mean of its divisors is an integer number (3302208).

Almost surely, 2^168490332 is an apocalyptic number.

168490332 is a gapful number since it is divisible by the number (12) 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 168490332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237758976).

168490332 is an abundant number, since it is smaller than the sum of its proper divisors (307027620).

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

168490332 is a wasteful number, since it uses less digits than its factorization.

168490332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 168490332 is about 12980.3825829596. The cubic root of 168490332 is about 552.3211348146.

The spelling of 168490332 in words is "one hundred sixty-eight million, four hundred ninety thousand, three hundred thirty-two".