168669240 has 128 divisors (see below), whose sum is σ = 542376000. Its totient is φ = 41811968.

The previous prime is 168669211. The next prime is 168669283. The reversal of 168669240 is 42966861.

It is a junction number, because it is equal to n+sod(n) for n = 168669192 and 168669201.

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 31 ways as a sum of consecutive naturals, for example, 181096 + ... + 182024.

Almost surely, 2^168669240 is an apocalyptic number.

168669240 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 168669240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271188000).

168669240 is an abundant number, since it is smaller than the sum of its proper divisors (373706760).

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

168669240 is a wasteful number, since it uses less digits than its factorization.

168669240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 168669240 is about 12987.2722309190. The cubic root of 168669240 is about 552.5165559490.

It can be divided in two parts, 16866 and 9240, that added together give a triangular number (26106 = T₂₂₈).

The spelling of 168669240 in words is "one hundred sixty-eight million, six hundred sixty-nine thousand, two hundred forty".