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80928030 = 23519236173
BaseRepresentation
bin1001101001011…
…01110100011110
312122021120101110
410310231310132
5131204144110
612010322450
72001606531
oct464556436
9178246343
1080928030
1141755477
1223129426
13139c6911
14aa68a18
157188a20
hex4d2dd1e

80928030 has 64 divisors (see below), whose sum is σ = 213373440. Its totient is φ = 19552896.

The previous prime is 80928017. The next prime is 80928047. The reversal of 80928030 is 3082908.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10024 + ... + 16196.

It is an arithmetic number, because the mean of its divisors is an integer number (3333960).

Almost surely, 280928030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80928030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106686720).

80928030 is an abundant number, since it is smaller than the sum of its proper divisors (132445410).

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

80928030 is a wasteful number, since it uses less digits than its factorization.

80928030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6225.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 80928030 is about 8996.0007781236. Note that the first 3 decimals coincide. The cubic root of 80928030 is about 432.5466865748.

The spelling of 80928030 in words is "eighty million, nine hundred twenty-eight thousand, thirty".

Divisors: 1 2 3 5 6 10 15 19 23 30 38 46 57 69 95 114 115 138 190 230 285 345 437 570 690 874 1311 2185 2622 4370 6173 6555 12346 13110 18519 30865 37038 61730 92595 117287 141979 185190 234574 283958 351861 425937 586435 703722 709895 851874 1172870 1419790 1759305 2129685 2697601 3518610 4259370 5395202 8092803 13488005 16185606 26976010 40464015 80928030