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122912808834 = 2320485468139
BaseRepresentation
bin111001001111000101…
…1001001111110000010
3102202021000010122001010
41302132023021332002
54003211134340314
6132244304021350
711610615431304
oct1623613117602
9382230118033
10122912808834
1148144092552
121b9a3301856
13b78a7c12aa
145d40133974
1532e5a75059
hex1c9e2c9f82

122912808834 has 8 divisors (see below), whose sum is σ = 245825617680. Its totient is φ = 40970936276.

The previous prime is 122912808833. The next prime is 122912808839. The reversal of 122912808834 is 438808219221.

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

122912808834 is an admirable number.

It is a super-4 number, since 4×1229128088344 (a number of 45 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (122912808833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10242734064 + ... + 10242734075.

It is an arithmetic number, because the mean of its divisors is an integer number (30728202210).

Almost surely, 2122912808834 is an apocalyptic number.

122912808834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

122912808834 is a wasteful number, since it uses less digits than its factorization.

122912808834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20485468144.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 122912808834 in words is "one hundred twenty-two billion, nine hundred twelve million, eight hundred eight thousand, eight hundred thirty-four".

Divisors: 1 2 3 6 20485468139 40970936278 61456404417 122912808834