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230172768 = 253272931127
BaseRepresentation
bin11011011100000…
…10100001100000
3121001002222200100
431232002201200
5432411012033
634501222400
75463302430
oct1556024140
9531088610
10230172768
11108a21231
1265101a00
13388bcb07
14227d82c0
1515319513
hexdb82860

230172768 has 288 divisors, whose sum is σ = 805109760. Its totient is φ = 60963840.

The previous prime is 230172757. The next prime is 230172827. The reversal of 230172768 is 867271032.

It is a tau number, because it is divible by the number of its divisors (288).

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 (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1812321 + ... + 1812447.

It is an arithmetic number, because the mean of its divisors is an integer number (2795520).

Almost surely, 2230172768 is an apocalyptic number.

230172768 is a gapful number since it is divisible by the number (28) 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 230172768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402554880).

230172768 is an abundant number, since it is smaller than the sum of its proper divisors (574936992).

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

230172768 is a wasteful number, since it uses less digits than its factorization.

230172768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 230172768 is about 15171.4458111282. The cubic root of 230172768 is about 612.8459402417.

The spelling of 230172768 in words is "two hundred thirty million, one hundred seventy-two thousand, seven hundred sixty-eight".