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80840808 = 23333112073
BaseRepresentation
bin1001101000110…
…00100001101000
312122010010202000
410310120201220
5131143401213
612004411000
72001064326
oct464304150
9178103660
1080840808
11416a5994
12230a6a60
1313995cc9
14aa44d16
15716cc73
hex4d18868

80840808 has 64 divisors (see below), whose sum is σ = 231820800. Its totient is φ = 26075520.

The previous prime is 80840789. The next prime is 80840833. The reversal of 80840808 is 80804808.

It is a super-3 number, since 3×808408083 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660 + ... + 12732.

It is an arithmetic number, because the mean of its divisors is an integer number (3622200).

Almost surely, 280840808 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 80840808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115910400).

80840808 is an abundant number, since it is smaller than the sum of its proper divisors (150979992).

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

80840808 is a wasteful number, since it uses less digits than its factorization.

80840808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12119 (or 12109 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 80840808 is about 8991.1516503727. The cubic root of 80840808 is about 432.3912350823.

It can be divided in two parts, 808 and 40808, that added together give a triangular number (41616 = T288).

The spelling of 80840808 in words is "eighty million, eight hundred forty thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 31 36 54 62 72 93 108 124 186 216 248 279 372 558 744 837 1116 1674 2232 3348 6696 12073 24146 36219 48292 72438 96584 108657 144876 217314 289752 325971 374263 434628 651942 748526 869256 1122789 1303884 1497052 2245578 2607768 2994104 3368367 4491156 6736734 8982312 10105101 13473468 20210202 26946936 40420404 80840808