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7928049 = 32991127
BaseRepresentation
bin11110001111100011110001
3112220210020110
4132033203301
54012144144
6441531533
7124246563
oct36174361
915823213
107928049
114525508
1227a3ba9
13184776c
1410a5333
15a690b9
hex78f8f1

7928049 has 8 divisors (see below), whose sum is σ = 10935360. Its totient is φ = 5103056.

The previous prime is 7928023. The next prime is 7928059. The reversal of 7928049 is 9408297.

7928049 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7928049 - 212 = 7923953 is a prime.

7928049 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7927998 and 7928016.

It is not an unprimeable number, because it can be changed into a prime (7928059) 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, 45477 + ... + 45650.

It is an arithmetic number, because the mean of its divisors is an integer number (1366920).

Almost surely, 27928049 is an apocalyptic number.

It is an amenable number.

7928049 is a deficient number, since it is larger than the sum of its proper divisors (3007311).

7928049 is a wasteful number, since it uses less digits than its factorization.

7928049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91159.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7928049 is about 2815.6791365495. The cubic root of 7928049 is about 199.3986017467.

The spelling of 7928049 in words is "seven million, nine hundred twenty-eight thousand, forty-nine".

Divisors: 1 3 29 87 91127 273381 2642683 7928049