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8742254789 = 31811347729
BaseRepresentation
bin10000010010001010…
…00011100011000101
3211120021002120001102
420021011003203011
5120401004123124
64003252505445
7426432640202
oct101105034305
924507076042
108742254789
113786858464
12183b91b285
13a94258438
145cd0c0ca9
15362767aae
hex2091438c5

8742254789 has 8 divisors (see below), whose sum is σ = 9035416320. Its totient is φ = 8449790400.

The previous prime is 8742254753. The next prime is 8742254791. The reversal of 8742254789 is 9874522478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8742254789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742253789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148724 + ... + 199005.

It is an arithmetic number, because the mean of its divisors is an integer number (1129427040).

Almost surely, 28742254789 is an apocalyptic number.

It is an amenable number.

8742254789 is a deficient number, since it is larger than the sum of its proper divisors (293161531).

8742254789 is a wasteful number, since it uses less digits than its factorization.

8742254789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348571.

The product of its digits is 9031680, while the sum is 56.

The square root of 8742254789 is about 93500.0256096222. The cubic root of 8742254789 is about 2060.0344661497.

The spelling of 8742254789 in words is "eight billion, seven hundred forty-two million, two hundred fifty-four thousand, seven hundred eighty-nine".

Divisors: 1 31 811 25141 347729 10779599 282008219 8742254789