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26930808793 = 722211732219
BaseRepresentation
bin11001000101001100…
…111000011111011001
32120111212001211112201
4121011030320133121
5420123241340133
620212152410201
71642241045350
oct310514703731
976455054481
1026930808793
111046a815279
1252770a6961
132702566225
141436990997
15a79468d7d
hex6453387d9

26930808793 has 8 divisors (see below), whose sum is σ = 30791942720. Its totient is φ = 23073143760.

The previous prime is 26930808787. The next prime is 26930808799. The reversal of 26930808793 is 39780803962.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26930808787) and next prime (26930808799).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-26930808793 is a prime.

It is a super-2 number, since 2×269308087932 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26930808799) 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, 850563 + ... + 881656.

It is an arithmetic number, because the mean of its divisors is an integer number (3848992840).

Almost surely, 226930808793 is an apocalyptic number.

It is an amenable number.

26930808793 is a deficient number, since it is larger than the sum of its proper divisors (3861133927).

26930808793 is a wasteful number, since it uses less digits than its factorization.

26930808793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734447.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 26930808793 in words is "twenty-six billion, nine hundred thirty million, eight hundred eight thousand, seven hundred ninety-three".

Divisors: 1 7 2221 15547 1732219 12125533 3847258399 26930808793