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168725980 = 22543196193
BaseRepresentation
bin10100000111010…
…00110111011100
3102202111011112101
422003220313130
5321143212410
624424214444
74116101323
oct1203506734
9382434471
10168725980
1187272365
124860a424
1328c57477
14185a10ba
15ec2cd3a
hexa0e8ddc

168725980 has 24 divisors (see below), whose sum is σ = 362566512. Its totient is φ = 65920512.

The previous prime is 168725951. The next prime is 168725981. The reversal of 168725980 is 89527861.

168725980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 168725980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168725981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97237 + ... + 98956.

It is an arithmetic number, because the mean of its divisors is an integer number (15106938).

Almost surely, 2168725980 is an apocalyptic number.

168725980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168725980 is an abundant number, since it is smaller than the sum of its proper divisors (193840532).

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

168725980 is a wasteful number, since it uses less digits than its factorization.

168725980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196245 (or 196243 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 168725980 is about 12989.4564936336. The cubic root of 168725980 is about 552.5785041633.

The spelling of 168725980 in words is "one hundred sixty-eight million, seven hundred twenty-five thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 196193 392386 784772 980965 1961930 3923860 8436299 16872598 33745196 42181495 84362990 168725980