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80852500 = 225432341
BaseRepresentation
bin1001101000110…
…11011000010100
312122010201210001
410310123120110
5131144240000
612004541044
72001143401
oct464333024
9178121701
1080852500
1141703753
12230b1784
131399b421
14aa492a8
15717146a
hex4d1b614

80852500 has 30 divisors (see below), whose sum is σ = 176813714. Its totient is φ = 32340000.

The previous prime is 80852477. The next prime is 80852503. The reversal of 80852500 is 525808.

It can be written as a sum of positive squares in 5 ways, for example, as 50183056 + 30669444 = 7084^2 + 5538^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80852503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 13671 + ... + 18670.

Almost surely, 280852500 is an apocalyptic number.

It is an amenable number.

80852500 is an abundant number, since it is smaller than the sum of its proper divisors (95961214).

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

80852500 is a wasteful number, since it uses less digits than its factorization.

80852500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32365 (or 32348 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 80852500 is about 8991.8018216595. The cubic root of 80852500 is about 432.4120796481.

It can be divided in two parts, 8085 and 2500, that added together give a triangular number (10585 = T145).

The spelling of 80852500 in words is "eighty million, eight hundred fifty-two thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 32341 64682 129364 161705 323410 646820 808525 1617050 3234100 4042625 8085250 16170500 20213125 40426250 80852500