168949740 has 96 divisors (see below), whose sum is σ = 507971520. Its totient is φ = 41803776.

The previous prime is 168949727. The next prime is 168949769. The reversal of 168949740 is 47949861.

It is a self number, because there is not a number n which added to its sum of digits gives 168949740.

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, 73326 + ... + 75594.

It is an arithmetic number, because the mean of its divisors is an integer number (5291370).

Almost surely, 2^168949740 is an apocalyptic number.

168949740 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 168949740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253985760).

168949740 is an abundant number, since it is smaller than the sum of its proper divisors (339021780).

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

168949740 is a wasteful number, since it uses less digits than its factorization.

168949740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371 (or 2369 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 168949740 is about 12998.0667793330. The cubic root of 168949740 is about 552.8226680004.

The spelling of 168949740 in words is "one hundred sixty-eight million, nine hundred forty-nine thousand, seven hundred forty".