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26796980 = 2257277691
BaseRepresentation
bin110011000111…
…0001110110100
31212102102112202
41212032032310
523330000410
62354204032
7443525210
oct146161664
955372482
1026796980
1114142a71
128b83618
135723102
1437b7940
152544ca5
hex198e3b4

26796980 has 48 divisors (see below), whose sum is σ = 64638336. Its totient is φ = 9141120.

The previous prime is 26796977. The next prime is 26796997. The reversal of 26796980 is 8969762.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38435 + ... + 39125.

It is an arithmetic number, because the mean of its divisors is an integer number (1346632).

Almost surely, 226796980 is an apocalyptic number.

26796980 is a gapful number since it is divisible by the number (20) 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 26796980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32319168).

26796980 is an abundant number, since it is smaller than the sum of its proper divisors (37841356).

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

26796980 is a wasteful number, since it uses less digits than its factorization.

26796980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 982 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 26796980 is about 5176.5799520533. The cubic root of 26796980 is about 299.2461815196.

The spelling of 26796980 in words is "twenty-six million, seven hundred ninety-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 277 554 691 1108 1382 1385 1939 2764 2770 3455 3878 4837 5540 6910 7756 9674 9695 13820 19348 19390 24185 38780 48370 96740 191407 382814 765628 957035 1339849 1914070 2679698 3828140 5359396 6699245 13398490 26796980