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68980350 = 2352577797
BaseRepresentation
bin1000001110010…
…00111001111110
311210210120020210
410013020321332
5120124332400
610502253250
71465215615
oct407107176
9153716223
1068980350
1135a34a5a
121b127226
13113a269a
14923887c
1560c8950
hex41c8e7e

68980350 has 48 divisors (see below), whose sum is σ = 171582768. Its totient is φ = 18339840.

The previous prime is 68980343. The next prime is 68980361. The reversal of 68980350 is 5308986.

It is a super-2 number, since 2×689803502 = 9516577372245000, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68980299 and 68980308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86152 + ... + 86948.

It is an arithmetic number, because the mean of its divisors is an integer number (3574641).

Almost surely, 268980350 is an apocalyptic number.

68980350 is an abundant number, since it is smaller than the sum of its proper divisors (102602418).

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

68980350 is a wasteful number, since it uses less digits than its factorization.

68980350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 68980350 is about 8305.4409876899. The cubic root of 68980350 is about 410.1176541188.

The spelling of 68980350 in words is "sixty-eight million, nine hundred eighty thousand, three hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 150 577 797 1154 1594 1731 2391 2885 3462 3985 4782 5770 7970 8655 11955 14425 17310 19925 23910 28850 39850 43275 59775 86550 119550 459869 919738 1379607 2299345 2759214 4598690 6898035 11496725 13796070 22993450 34490175 68980350