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2897206379 = 9729868107
BaseRepresentation
bin1010110010101111…
…1101110001101011
321110220121022222222
42230223331301223
521413141101004
61155253104255
7131536563554
oct25453756153
97426538888
102897206379
111257441041
1268a32808b
13372303302
141d6ac932b
1511e53b7be
hexacafdc6b

2897206379 has 4 divisors (see below), whose sum is σ = 2927074584. Its totient is φ = 2867338176.

The previous prime is 2897206373. The next prime is 2897206381. The reversal of 2897206379 is 9736027982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9736027982 = 24868013991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2897206379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2897206379.

It is not an unprimeable number, because it can be changed into a prime (2897206373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14933957 + ... + 14934150.

It is an arithmetic number, because the mean of its divisors is an integer number (731768646).

Almost surely, 22897206379 is an apocalyptic number.

2897206379 is a deficient number, since it is larger than the sum of its proper divisors (29868205).

2897206379 is an equidigital number, since it uses as much as digits as its factorization.

2897206379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868204.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 2897206379 is about 53825.7037018560. The cubic root of 2897206379 is about 1425.5850892117.

The spelling of 2897206379 in words is "two billion, eight hundred ninety-seven million, two hundred six thousand, three hundred seventy-nine".

Divisors: 1 97 29868107 2897206379