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80300920 = 2357286789
BaseRepresentation
bin1001100100101…
…00101101111000
312121002201011011
410302110231320
5131024112140
611545043304
71663355320
oct462245570
9177081134
1080300920
11413672a7
1222a86534
131383734b
14a944280
1570b2cea
hex4c94b78

80300920 has 32 divisors (see below), whose sum is σ = 206488800. Its totient is φ = 27531648.

The previous prime is 80300917. The next prime is 80300939. The reversal of 80300920 is 2900308.

It is a junction number, because it is equal to n+sod(n) for n = 80300891 and 80300900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143115 + ... + 143674.

It is an arithmetic number, because the mean of its divisors is an integer number (6452775).

Almost surely, 280300920 is an apocalyptic number.

It is an amenable number.

80300920 is an abundant number, since it is smaller than the sum of its proper divisors (126187880).

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

80300920 is a wasteful number, since it uses less digits than its factorization.

80300920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286807 (or 286803 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 80300920 is about 8961.0780601443. The cubic root of 80300920 is about 431.4265224277.

The spelling of 80300920 in words is "eighty million, three hundred thousand, nine hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 286789 573578 1147156 1433945 2007523 2294312 2867890 4015046 5735780 8030092 10037615 11471560 16060184 20075230 40150460 80300920