168023280 has 160 divisors (see below), whose sum is σ = 553536000. Its totient is φ = 42071040.

The previous prime is 168023269. The next prime is 168023293. The reversal of 168023280 is 82320861.

It is a super-6 number, since 6×168023280⁶ (a number of 51 digits) contains 666666 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 336471 + ... + 336969.

It is an arithmetic number, because the mean of its divisors is an integer number (3459600).

Almost surely, 2^168023280 is an apocalyptic number.

168023280 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 168023280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276768000).

168023280 is an abundant number, since it is smaller than the sum of its proper divisors (385512720).

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

168023280 is a wasteful number, since it uses less digits than its factorization.

168023280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 168023280 is about 12962.3794112038. The cubic root of 168023280 is about 551.8103213033.

The spelling of 168023280 in words is "one hundred sixty-eight million, twenty-three thousand, two hundred eighty".