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68801852 = 2272639343
BaseRepresentation
bin1000001100111…
…01010100111100
311210110111101202
410012131110330
5120103124402
610454355032
71463543330
oct406352474
9153414352
1068801852
1135922939
121b05ba78
131133c372
1491cd7c0
156090b02
hex419d53c

68801852 has 24 divisors (see below), whose sum is σ = 138141696. Its totient is φ = 29371248.

The previous prime is 68801851. The next prime is 68801867. The reversal of 68801852 is 25810886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68801851) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2693 + ... + 12035.

It is an arithmetic number, because the mean of its divisors is an integer number (5755904).

Almost surely, 268801852 is an apocalyptic number.

It is an amenable number.

68801852 is an abundant number, since it is smaller than the sum of its proper divisors (69339844).

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

68801852 is a wasteful number, since it uses less digits than its factorization.

68801852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9617 (or 9615 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 68801852 is about 8294.6881797931. The cubic root of 68801852 is about 409.7635995925.

The spelling of 68801852 in words is "sixty-eight million, eight hundred one thousand, eight hundred fifty-two".

Divisors: 1 2 4 7 14 28 263 526 1052 1841 3682 7364 9343 18686 37372 65401 130802 261604 2457209 4914418 9828836 17200463 34400926 68801852