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80960020 = 2254048001
BaseRepresentation
bin1001101001101…
…01101000010100
312122100012021021
410310311220110
5131211210040
612011130524
72002102021
oct464655024
9178305237
1080960020
1141777509
1223143a44
1313a0834b
14aa76548
15719324a
hex4d35a14

80960020 has 12 divisors (see below), whose sum is σ = 170016084. Its totient is φ = 32384000.

The previous prime is 80960017. The next prime is 80960027. The reversal of 80960020 is 2006908.

It can be written as a sum of positive squares in 2 ways, for example, as 38787984 + 42172036 = 6228^2 + 6494^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80960027) 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, 2023981 + ... + 2024020.

It is an arithmetic number, because the mean of its divisors is an integer number (14168007).

Almost surely, 280960020 is an apocalyptic number.

It is an amenable number.

80960020 is an abundant number, since it is smaller than the sum of its proper divisors (89056064).

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

80960020 is a wasteful number, since it uses less digits than its factorization.

80960020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048010 (or 4048008 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 80960020 is about 8997.7786147471. The cubic root of 80960020 is about 432.6036727870.

Adding to 80960020 its reverse (2006908), we get a palindrome (82966928).

The spelling of 80960020 in words is "eighty million, nine hundred sixty thousand, twenty".

Divisors: 1 2 4 5 10 20 4048001 8096002 16192004 20240005 40480010 80960020