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768980 = 22538449
BaseRepresentation
bin10111011101111010100
31110001211202
42323233110
5144101410
624252032
76351632
oct2735724
91401752
10768980
11485823
12311018
1320c024
14160352
15102ca5
hexbbbd4

768980 has 12 divisors (see below), whose sum is σ = 1614900. Its totient is φ = 307584.

The previous prime is 768979. The next prime is 768983. The reversal of 768980 is 89867.

It can be written as a sum of positive squares in 2 ways, for example, as 99856 + 669124 = 316^2 + 818^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768983) 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 3 ways as a sum of consecutive naturals, for example, 19205 + ... + 19244.

It is an arithmetic number, because the mean of its divisors is an integer number (134575).

2768980 is an apocalyptic number.

It is an amenable number.

768980 is an abundant number, since it is smaller than the sum of its proper divisors (845920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

768980 is a wasteful number, since it uses less digits than its factorization.

768980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38458 (or 38456 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 768980 is about 876.9150471967. The cubic root of 768980 is about 91.6160749297.

The spelling of 768980 in words is "seven hundred sixty-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 38449 76898 153796 192245 384490 768980