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7980741 = 331947331
BaseRepresentation
bin11110011100011011000101
3120000110112000
4132130123011
54020340431
6443015513
7124556316
oct36343305
916013460
107980741
11456105a
12280a599
131865742
1410ba60d
15a799e6
hex79c6c5

7980741 has 32 divisors (see below), whose sum is σ = 12748800. Its totient is φ = 4918320.

The previous prime is 7980727. The next prime is 7980751. The reversal of 7980741 is 1470897.

It is not a de Polignac number, because 7980741 - 26 = 7980677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7980696 and 7980705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7980751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23946 + ... + 24276.

It is an arithmetic number, because the mean of its divisors is an integer number (398400).

Almost surely, 27980741 is an apocalyptic number.

It is an amenable number.

7980741 is a deficient number, since it is larger than the sum of its proper divisors (4768059).

7980741 is a wasteful number, since it uses less digits than its factorization.

7980741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 7980741 is about 2825.0205308988. The cubic root of 7980741 is about 199.8393793729.

The spelling of 7980741 in words is "seven million, nine hundred eighty thousand, seven hundred forty-one".

Divisors: 1 3 9 19 27 47 57 141 171 331 423 513 893 993 1269 2679 2979 6289 8037 8937 15557 18867 24111 46671 56601 140013 169803 295583 420039 886749 2660247 7980741