168028380 has 72 divisors (see below), whose sum is σ = 548900352. Its totient is φ = 41360256.

The previous prime is 168028379. The next prime is 168028403. The reversal of 168028380 is 83820861.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33564 + ... + 38243.

It is an arithmetic number, because the mean of its divisors is an integer number (7623616).

Almost surely, 2^168028380 is an apocalyptic number.

168028380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168028380 is an abundant number, since it is smaller than the sum of its proper divisors (380871972).

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

168028380 is a wasteful number, since it uses less digits than its factorization.

168028380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71835 (or 71830 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 168028380 is about 12962.5761328526. The cubic root of 168028380 is about 551.8159042681.

The spelling of 168028380 in words is "one hundred sixty-eight million, twenty-eight thousand, three hundred eighty".