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68767504 = 24131791847
BaseRepresentation
bin1000001100101…
…00111100010000
311210101202021121
410012110330100
5120101030004
610453532024
71463341231
oct406247420
9153352247
1068767504
11358aa053
121b044014
1311329840
1491c1088
156085854
hex4194f10

68767504 has 40 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 31544448.

The previous prime is 68767487. The next prime is 68767507. The reversal of 68767504 is 40576786.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68767507) 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, 36309 + ... + 38155.

It is an arithmetic number, because the mean of its divisors is an integer number (3609144).

Almost surely, 268767504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68767504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72182880).

68767504 is an abundant number, since it is smaller than the sum of its proper divisors (75598256).

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

68767504 is a wasteful number, since it uses less digits than its factorization.

68767504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 68767504 is about 8292.6174396266. The cubic root of 68767504 is about 409.6953993793.

The spelling of 68767504 in words is "sixty-eight million, seven hundred sixty-seven thousand, five hundred four".

Divisors: 1 2 4 8 13 16 26 52 104 179 208 358 716 1432 1847 2327 2864 3694 4654 7388 9308 14776 18616 24011 29552 37232 48022 96044 192088 330613 384176 661226 1322452 2644904 4297969 5289808 8595938 17191876 34383752 68767504