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7988285 = 51597657
BaseRepresentation
bin11110011110010000111101
3120000211212102
4132132100331
54021111120
6443114445
7124620314
oct36362075
916024772
107988285
114566798
122812a25
131868cc6
1410bd27b
15a7bd75
hex79e43d

7988285 has 4 divisors (see below), whose sum is σ = 9585948. Its totient is φ = 6390624.

The previous prime is 7988273. The next prime is 7988293. The reversal of 7988285 is 5828897.

7988285 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1708249 + 6280036 = 1307^2 + 2506^2 .

It is a cyclic number.

It is not a de Polignac number, because 7988285 - 26 = 7988221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798824 + ... + 798833.

It is an arithmetic number, because the mean of its divisors is an integer number (2396487).

Almost surely, 27988285 is an apocalyptic number.

It is an amenable number.

7988285 is a deficient number, since it is larger than the sum of its proper divisors (1597663).

7988285 is a wasteful number, since it uses less digits than its factorization.

7988285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597662.

The product of its digits is 322560, while the sum is 47.

The square root of 7988285 is about 2826.3554270473. The cubic root of 7988285 is about 199.9023273080.

The spelling of 7988285 in words is "seven million, nine hundred eighty-eight thousand, two hundred eighty-five".

Divisors: 1 5 1597657 7988285