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26230788978 = 2323190078181
BaseRepresentation
bin11000011011011110…
…100001001101110010
32111201001212010212220
4120123132201031302
5412210040221403
620014504501510
71616011012302
oct303336411562
974631763786
1026230788978
1110140661aa9
12510077a896
13262051ab14
1413aba0d602
15a37c90953
hex61b7a1372

26230788978 has 16 divisors (see below), whose sum is σ = 54742516416. Its totient is φ = 8363439920.

The previous prime is 26230788977. The next prime is 26230789009. The reversal of 26230788978 is 87988703262.

It is not an unprimeable number, because it can be changed into a prime (26230788977) 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, 95038953 + ... + 95039228.

It is an arithmetic number, because the mean of its divisors is an integer number (3421407276).

Almost surely, 226230788978 is an apocalyptic number.

26230788978 is an abundant number, since it is smaller than the sum of its proper divisors (28511727438).

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

26230788978 is a wasteful number, since it uses less digits than its factorization.

26230788978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190078209.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 26230788978 in words is "twenty-six billion, two hundred thirty million, seven hundred eighty-eight thousand, nine hundred seventy-eight".

Divisors: 1 2 3 6 23 46 69 138 190078181 380156362 570234543 1140469086 4371798163 8743596326 13115394489 26230788978