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26074321 = 721340933
BaseRepresentation
bin110001101110…
…1110011010001
31211001201020121
41203131303101
523133334241
62330510241
7434425300
oct143356321
954051217
1026074321
111379a029
128895381
13552c1c0
14366a437
152450ad1
hex18ddcd1

26074321 has 12 divisors (see below), whose sum is σ = 32665332. Its totient is φ = 20629728.

The previous prime is 26074313. The next prime is 26074337. The reversal of 26074321 is 12347062.

It can be written as a sum of positive squares in 2 ways, for example, as 5499025 + 20575296 = 2345^2 + 4536^2 .

It is not a de Polignac number, because 26074321 - 23 = 26074313 is a prime.

It is a super-2 number, since 2×260743212 = 1359740431222082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26074351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19830 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (2722111).

Almost surely, 226074321 is an apocalyptic number.

It is an amenable number.

26074321 is a deficient number, since it is larger than the sum of its proper divisors (6591011).

26074321 is a wasteful number, since it uses less digits than its factorization.

26074321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40960 (or 40953 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 26074321 is about 5106.3020866376. The cubic root of 26074321 is about 296.5316148050.

The spelling of 26074321 in words is "twenty-six million, seventy-four thousand, three hundred twenty-one".

Divisors: 1 7 13 49 91 637 40933 286531 532129 2005717 3724903 26074321