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2807424238369 = 172985612
BaseRepresentation
bin101000110110100111100…
…001100100001100100001
3100221101110012222222101011
4220312213201210030201
5331444101101111434
65545413552340521
7406554406201642
oct50664741441441
910841405888334
102807424238369
1199269287a773
12394120844741
1317497b6938aa
1499c46c456c9
154d062e88e64
hex28da7864321

2807424238369 has 9 divisors (see below), whose sum is σ = 2982311369881. Its totient is φ = 2642254827520.

The previous prime is 2807424238327. The next prime is 2807424238373. The reversal of 2807424238369 is 9638324247082.

It is a happy number.

The square root of 2807424238369 is 1675537.

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

It can be written as a sum of positive squares in 4 ways, for example, as 68107950625 + 2739316287744 = 260975^2 + 1655088^2 .

It is not a de Polignac number, because 2807424238369 - 221 = 2807422141217 is a prime.

It is a super-2 number, since 2×28074242383692 (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2807424232369) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 28434849 + ... + 28533409.

Almost surely, 22807424238369 is an apocalyptic number.

2807424238369 is the 1675537-th square number.

2807424238369 is the 837769-th centered octagonal number.

It is an amenable number.

2807424238369 is a deficient number, since it is larger than the sum of its proper divisors (174887131512).

2807424238369 is an frugal number, since it uses more digits than its factorization.

2807424238369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197156 (or 98578 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 58.

The spelling of 2807424238369 in words is "two trillion, eight hundred seven billion, four hundred twenty-four million, two hundred thirty-eight thousand, three hundred sixty-nine".

Divisors: 1 17 289 98561 1675537 28484129 9714270721 165142602257 2807424238369