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765980 = 22538299
BaseRepresentation
bin10111011000000011100
31102220201122
42323000130
5144002410
624230112
76340115
oct2730034
91386648
10765980
11483546
1230b338
1320a857
1415d20c
15101e55
hexbb01c

765980 has 12 divisors (see below), whose sum is σ = 1608600. Its totient is φ = 306384.

The previous prime is 765971. The next prime is 765983. The reversal of 765980 is 89567.

It is a self number, because there is not a number n which added to its sum of digits gives 765980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19130 + ... + 19169.

It is an arithmetic number, because the mean of its divisors is an integer number (134050).

2765980 is an apocalyptic number.

It is an amenable number.

765980 is an abundant number, since it is smaller than the sum of its proper divisors (842620).

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

765980 is a wasteful number, since it uses less digits than its factorization.

765980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38308 (or 38306 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 765980 is about 875.2028336334. The cubic root of 765980 is about 91.4967799239.

It can be divided in two parts, 765 and 980, that multiplied together give a triangular number (749700 = T1224).

The spelling of 765980 in words is "seven hundred sixty-five thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 38299 76598 153196 191495 382990 765980