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28957862325001 = 53812512
BaseRepresentation
bin1101001010110010001110…
…00110001110101100001001
310210112100022012210122200111
412211121013012032230021
512243421200223400001
6141331020332034321
76046064552326561
oct645310706165411
9123470265718614
1028957862325001
119254a62397275
1232b82896029a1
13132093a271b0c
147217d48bdda1
153533d9070851
hex1a564718eb09

28957862325001 has 3 divisors (see below), whose sum is σ = 28957867706253. Its totient is φ = 28957856943750.

The previous prime is 28957862324971. The next prime is 28957862325013. The reversal of 28957862325001 is 10052326875982.

The square root of 28957862325001 is 5381251.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 28957862325001 - 219 = 28957861800713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28957862325401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2690626 + ... + 8071876.

It is an arithmetic number, because the mean of its divisors is an integer number (9652622568751).

Almost surely, 228957862325001 is an apocalyptic number.

28957862325001 is the 5381251-st square number.

28957862325001 is the 2690626-th centered octagonal number.

It is an amenable number.

28957862325001 is a deficient number, since it is larger than the sum of its proper divisors (5381252).

28957862325001 is an frugal number, since it uses more digits than its factorization.

28957862325001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10762502 (or 5381251 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 28957862325001 in words is "twenty-eight trillion, nine hundred fifty-seven billion, eight hundred sixty-two million, three hundred twenty-five thousand, one".

Divisors: 1 5381251 28957862325001