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2088007857 = 321361292561
BaseRepresentation
bin111110001110100…
…0111100010110001
312101111221210022100
41330131013202301
513234012222412
6543105131013
7102512526315
oct17435074261
95344853270
102088007857
11981698231
124a3329a69
1327377c610
1415b447b45
15c3498edc
hex7c7478b1

2088007857 has 24 divisors (see below), whose sum is σ = 3301269608. Its totient is φ = 1263859200.

The previous prime is 2088007849. The next prime is 2088007871. The reversal of 2088007857 is 7587008802.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 109181601 + 1978826256 = 10449^2 + 44484^2 .

It is not a de Polignac number, because 2088007857 - 23 = 2088007849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2088007807) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 139144 + ... + 153417.

Almost surely, 22088007857 is an apocalyptic number.

It is an amenable number.

2088007857 is a deficient number, since it is larger than the sum of its proper divisors (1213261751).

2088007857 is a wasteful number, since it uses less digits than its factorization.

2088007857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292641 (or 292638 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The square root of 2088007857 is about 45694.7246079895. The cubic root of 2088007857 is about 1278.1369088562.

The spelling of 2088007857 in words is "two billion, eighty-eight million, seven thousand, eight hundred fifty-seven".

Divisors: 1 3 9 13 39 61 117 183 549 793 2379 7137 292561 877683 2633049 3803293 11409879 17846221 34229637 53538663 160615989 232000873 696002619 2088007857