168996240 has 160 divisors (see below), whose sum is σ = 665314560. Its totient is φ = 38624256.

The previous prime is 168996193. The next prime is 168996251. The reversal of 168996240 is 42699861.

It is a happy number.

168996240 is a `hidden beast` number, since 16 + 8 + 9 + 9 + 624 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 31 ways as a sum of consecutive naturals, for example, 9532 + ... + 20708.

It is an arithmetic number, because the mean of its divisors is an integer number (4158216).

Almost surely, 2^168996240 is an apocalyptic number.

168996240 is a gapful number since it is divisible by the number (10) 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 168996240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332657280).

168996240 is an abundant number, since it is smaller than the sum of its proper divisors (496318320).

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

168996240 is a wasteful number, since it uses less digits than its factorization.

168996240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206 (or 11194 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 168996240 is about 12999.8553838110. The cubic root of 168996240 is about 552.8733811021.

The spelling of 168996240 in words is "one hundred sixty-eight million, nine hundred ninety-six thousand, two hundred forty".