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80908512 = 253312877
BaseRepresentation
bin1001101001010…
…01000011100000
312122020120121120
410310221003200
5131203033022
612010052240
72001465606
oct464510340
9178216546
1080908512
1141741843
122311a080
13139baa79
14aa61876
157182d5c
hex4d290e0

80908512 has 72 divisors (see below), whose sum is σ = 219707208. Its totient is φ = 26069760.

The previous prime is 80908493. The next prime is 80908519. The reversal of 80908512 is 21580908.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80908519) 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, 91818 + ... + 92694.

It is an arithmetic number, because the mean of its divisors is an integer number (3051489).

Almost surely, 280908512 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 80908512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109853604).

80908512 is an abundant number, since it is smaller than the sum of its proper divisors (138798696).

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

80908512 is a wasteful number, since it uses less digits than its factorization.

80908512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 80908512 is about 8994.9158973278. The cubic root of 80908512 is about 432.5119103050.

The spelling of 80908512 in words is "eighty million, nine hundred eight thousand, five hundred twelve".

Divisors: 1 2 3 4 6 8 12 16 24 31 32 48 62 93 96 124 186 248 372 496 744 877 961 992 1488 1754 1922 2631 2883 2976 3508 3844 5262 5766 7016 7688 10524 11532 14032 15376 21048 23064 27187 28064 30752 42096 46128 54374 81561 84192 92256 108748 163122 217496 326244 434992 652488 842797 869984 1304976 1685594 2528391 2609952 3371188 5056782 6742376 10113564 13484752 20227128 26969504 40454256 80908512