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80412904 = 23111325407
BaseRepresentation
bin1001100101100…
…00000011101000
312121022101202201
410302300003220
5131041203104
611551305544
71664332645
oct462600350
9177271681
1080412904
1141433450
1222b1b2b4
1313876300
14a972dcc
1570d60a4
hex4cb00e8

80412904 has 48 divisors (see below), whose sum is σ = 178139520. Its totient is φ = 33733440.

The previous prime is 80412901. The next prime is 80412919. The reversal of 80412904 is 40921408.

It is not an unprimeable number, because it can be changed into a prime (80412901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12169 + ... + 17575.

It is an arithmetic number, because the mean of its divisors is an integer number (3711240).

Almost surely, 280412904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80412904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89069760).

80412904 is an abundant number, since it is smaller than the sum of its proper divisors (97726616).

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

80412904 is a wasteful number, since it uses less digits than its factorization.

80412904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450 (or 5433 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80412904 is about 8967.3242385898. The cubic root of 80412904 is about 431.6269785236.

The spelling of 80412904 in words is "eighty million, four hundred twelve thousand, nine hundred four".

Divisors: 1 2 4 8 11 13 22 26 44 52 88 104 143 169 286 338 572 676 1144 1352 1859 3718 5407 7436 10814 14872 21628 43256 59477 70291 118954 140582 237908 281164 475816 562328 773201 913783 1546402 1827566 3092804 3655132 6185608 7310264 10051613 20103226 40206452 80412904