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2857299080 = 23571432477
BaseRepresentation
bin1010101001001110…
…1110110010001000
321101010111211110212
42222103232302020
521322432032310
61151305500252
7130543433006
oct25223566210
97333454425
102857299080
1112369640a9
12678aa1688
13366c6ca1c
141d169ba76
1511aca7205
hexaa4eec88

2857299080 has 16 divisors (see below), whose sum is σ = 6428923020. Its totient is φ = 1142919616.

The previous prime is 2857299017. The next prime is 2857299083. The reversal of 2857299080 is 809927582.

It can be written as a sum of positive squares in 2 ways, for example, as 2845368964 + 11930116 = 53342^2 + 3454^2 .

It is not an unprimeable number, because it can be changed into a prime (2857299083) 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, 35716199 + ... + 35716278.

Almost surely, 22857299080 is an apocalyptic number.

2857299080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2857299080 is an abundant number, since it is smaller than the sum of its proper divisors (3571623940).

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

2857299080 is a wasteful number, since it uses less digits than its factorization.

2857299080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71432488 (or 71432484 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 2857299080 is about 53453.7096935283. The cubic root of 2857299080 is about 1419.0092738907.

The spelling of 2857299080 in words is "two billion, eight hundred fifty-seven million, two hundred ninety-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 71432477 142864954 285729908 357162385 571459816 714324770 1428649540 2857299080