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7982910845 = 5713139912541
BaseRepresentation
bin1110110111101000…
…11000110101111101
3202121100020212222122
413123310120311331
5112322111121340
63400045252325
7401552423360
oct73364306575
922540225878
107982910845
113427166088
1216695640a5
139a2b3b8b0
1455a2da0d7
1531ac71db5
hex1dbd18d7d

7982910845 has 32 divisors (see below), whose sum is σ = 11799513600. Its totient is φ = 5048904960.

The previous prime is 7982910833. The next prime is 7982910853. The reversal of 7982910845 is 5480192897.

It is not a de Polignac number, because 7982910845 - 24 = 7982910829 is a prime.

It is a super-2 number, since 2×79829108452 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630275 + ... + 642815.

It is an arithmetic number, because the mean of its divisors is an integer number (368734800).

Almost surely, 27982910845 is an apocalyptic number.

It is an amenable number.

7982910845 is a deficient number, since it is larger than the sum of its proper divisors (3816602755).

7982910845 is a wasteful number, since it uses less digits than its factorization.

7982910845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13965.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The square root of 7982910845 is about 89347.1367476317. The cubic root of 7982910845 is about 1998.5748885198.

The spelling of 7982910845 in words is "seven billion, nine hundred eighty-two million, nine hundred ten thousand, eight hundred forty-five".

Divisors: 1 5 7 13 35 65 91 455 1399 6995 9793 12541 18187 48965 62705 87787 90935 127309 163033 438935 636545 815165 1141231 5706155 17544859 87724295 122814013 228083167 614070065 1140415835 1596582169 7982910845