168812340 has 96 divisors (see below), whose sum is σ = 500142720. Its totient is φ = 42425856.

The previous prime is 168812299. The next prime is 168812383. The reversal of 168812340 is 43218861.

It is a super-2 number, since 2×168812340² = 56995212272551200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 425022 + ... + 425418.

It is an arithmetic number, because the mean of its divisors is an integer number (5209820).

Almost surely, 2^168812340 is an apocalyptic number.

168812340 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 168812340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250071360).

168812340 is an abundant number, since it is smaller than the sum of its proper divisors (331330380).

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

168812340 is a wasteful number, since it uses less digits than its factorization.

168812340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 168812340 is about 12992.7803029221. The cubic root of 168812340 is about 552.6727645734.

It can be divided in two parts, 1688 and 12340, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 168812340 in words is "one hundred sixty-eight million, eight hundred twelve thousand, three hundred forty".