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80758980 = 223252319507
BaseRepresentation
bin1001101000001…
…00100011000100
312121221222111100
410310010203010
5131133241410
612002540100
72000303631
oct464044304
9177858440
1080758980
114164a465
1223067630
13139679a3
14aa23188
1571538c0
hex4d048c4

80758980 has 72 divisors (see below), whose sum is σ = 255632832. Its totient is φ = 20598336.

The previous prime is 80758973. The next prime is 80758981. The reversal of 80758980 is 8985708.

It is a super-3 number, since 3×807589803 (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (80758981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5614 + ... + 13893.

It is an arithmetic number, because the mean of its divisors is an integer number (3550456).

Almost surely, 280758980 is an apocalyptic number.

It is an amenable number.

80758980 is an abundant number, since it is smaller than the sum of its proper divisors (174873852).

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

80758980 is a wasteful number, since it uses less digits than its factorization.

80758980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19545 (or 19540 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 80758980 is about 8986.6000244809. The cubic root of 80758980 is about 432.2452953624.

The spelling of 80758980 in words is "eighty million, seven hundred fifty-eight thousand, nine hundred eighty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 23 30 36 45 46 60 69 90 92 115 138 180 207 230 276 345 414 460 690 828 1035 1380 2070 4140 19507 39014 58521 78028 97535 117042 175563 195070 234084 292605 351126 390140 448661 585210 702252 877815 897322 1170420 1345983 1755630 1794644 2243305 2691966 3511260 4037949 4486610 5383932 6729915 8075898 8973220 13459830 16151796 20189745 26919660 40379490 80758980