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80530404 = 2238975403
BaseRepresentation
bin1001100110011…
…00101111100100
312121112100221120
410303030233210
5131103433104
611554013540
71665332343
oct463145744
9177470846
1080530404
1141503759
1222b772b0
13138b7936
14a9a3b5a
15710acd9
hex4cccbe4

80530404 has 24 divisors (see below), whose sum is σ = 190018080. Its totient is φ = 26541504.

The previous prime is 80530403. The next prime is 80530409. The reversal of 80530404 is 40403508.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80530403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36634 + ... + 38769.

It is an arithmetic number, because the mean of its divisors is an integer number (7917420).

Almost surely, 280530404 is an apocalyptic number.

It is an amenable number.

80530404 is an abundant number, since it is smaller than the sum of its proper divisors (109487676).

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

80530404 is a wasteful number, since it uses less digits than its factorization.

80530404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75499 (or 75497 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 80530404 is about 8973.8734111865. The cubic root of 80530404 is about 431.8371085118.

The spelling of 80530404 in words is "eighty million, five hundred thirty thousand, four hundred four".

Divisors: 1 2 3 4 6 12 89 178 267 356 534 1068 75403 150806 226209 301612 452418 904836 6710867 13421734 20132601 26843468 40265202 80530404