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20122878714 = 23157173123479
BaseRepresentation
bin10010101111011010…
…101100001011111010
31220221101202011011020
4102233122230023322
5312202424104324
613124435043310
71311443434611
oct225732541372
956841664136
1020122878714
118596927684
123a97140536
131b88c9bc33
14d8c750878
157cb93e679
hex4af6ac2fa

20122878714 has 32 divisors (see below), whose sum is σ = 40736545920. Its totient is φ = 6626323392.

The previous prime is 20122878707. The next prime is 20122878781. The reversal of 20122878714 is 41787822102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101227 + ... + 224705.

It is an arithmetic number, because the mean of its divisors is an integer number (1273017060).

Almost surely, 220122878714 is an apocalyptic number.

20122878714 is an abundant number, since it is smaller than the sum of its proper divisors (20613667206).

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

20122878714 is a wasteful number, since it uses less digits than its factorization.

20122878714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123814.

The product of its (nonzero) digits is 100352, while the sum is 42.

The spelling of 20122878714 in words is "twenty billion, one hundred twenty-two million, eight hundred seventy-eight thousand, seven hundred fourteen".

Divisors: 1 2 3 6 157 173 314 346 471 519 942 1038 27161 54322 81483 123479 162966 246958 370437 740874 19386203 21361867 38772406 42723734 58158609 64085601 116317218 128171202 3353813119 6707626238 10061439357 20122878714