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80864004 = 22313569911
BaseRepresentation
bin1001101000111…
…10001100000100
312122011022120010
410310132030010
5131200122004
612005110220
72001222054
oct464361404
9178138503
1080864004
1141711361
12230b8370
13139a3730
14aa4d564
157174a89
hex4d1e304

80864004 has 48 divisors (see below), whose sum is σ = 203777280. Its totient is φ = 24810240.

The previous prime is 80863997. The next prime is 80864009. The reversal of 80864004 is 40046808.

It is not an unprimeable number, because it can be changed into a prime (80864009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88309 + ... + 89219.

It is an arithmetic number, because the mean of its divisors is an integer number (4245360).

Almost surely, 280864004 is an apocalyptic number.

It is an amenable number.

80864004 is an abundant number, since it is smaller than the sum of its proper divisors (122913276).

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

80864004 is a wasteful number, since it uses less digits than its factorization.

80864004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 80864004 is about 8992.4414927204. The cubic root of 80864004 is about 432.4325870851.

It can be divided in two parts, 8086 and 4004, that added together give a triangular number (12090 = T155).

The spelling of 80864004 in words is "eighty million, eight hundred sixty-four thousand, four".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 569 911 1138 1707 1822 2276 2733 3414 3644 5466 6828 7397 10932 11843 14794 22191 23686 29588 35529 44382 47372 71058 88764 142116 518359 1036718 1555077 2073436 3110154 6220308 6738667 13477334 20216001 26954668 40432002 80864004