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80972300 = 22521922243
BaseRepresentation
bin1001101001110…
…00101000001100
312122100211010002
410310320220030
5131212103200
612011303432
72002152563
oct464705014
9178324102
1080972300
1141785762
122314ab78
1313a10b06
14aa7abda
157196bd5
hex4d38a0c

80972300 has 54 divisors (see below), whose sum is σ = 185527188. Its totient is φ = 30670560.

The previous prime is 80972291. The next prime is 80972303. The reversal of 80972300 is 327908.

It is not an unprimeable number, because it can be changed into a prime (80972303) 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 17 ways as a sum of consecutive naturals, for example, 34979 + ... + 37221.

Almost surely, 280972300 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 80972300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92763594).

80972300 is an abundant number, since it is smaller than the sum of its proper divisors (104554888).

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

80972300 is a wasteful number, since it uses less digits than its factorization.

80972300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295 (or 2269 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 80972300 is about 8998.4609795231. The cubic root of 80972300 is about 432.6255440947.

The spelling of 80972300 in words is "eighty million, nine hundred seventy-two thousand, three hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 361 380 475 722 950 1444 1805 1900 2243 3610 4486 7220 8972 9025 11215 18050 22430 36100 42617 44860 56075 85234 112150 170468 213085 224300 426170 809723 852340 1065425 1619446 2130850 3238892 4048615 4261700 8097230 16194460 20243075 40486150 80972300