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20379101292 = 22321151462377
BaseRepresentation
bin10010111110101100…
…000110100001101100
31221121020212121110100
4102332230012201230
5313214022220132
613210110511100
71321004334324
oct227654064154
957536777410
1020379101292
118708520480
123b48b05490
131bca0aca24
14db47aa284
157e41a237c
hex4beb0686c

20379101292 has 36 divisors (see below), whose sum is σ = 56196916776. Its totient is φ = 6175485120.

The previous prime is 20379101287. The next prime is 20379101311. The reversal of 20379101292 is 29210197302.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25730793 + ... + 25731584.

It is an arithmetic number, because the mean of its divisors is an integer number (1561025466).

Almost surely, 220379101292 is an apocalyptic number.

20379101292 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20379101292 is an abundant number, since it is smaller than the sum of its proper divisors (35817815484).

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

20379101292 is a wasteful number, since it uses less digits than its factorization.

20379101292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51462398 (or 51462393 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

Adding to 20379101292 its reverse (29210197302), we get a palindrome (49589298594).

The spelling of 20379101292 in words is "twenty billion, three hundred seventy-nine million, one hundred one thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 132 198 396 51462377 102924754 154387131 205849508 308774262 463161393 566086147 617548524 926322786 1132172294 1698258441 1852645572 2264344588 3396516882 5094775323 6793033764 10189550646 20379101292