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80475830 = 2519423557
BaseRepresentation
bin1001100101111…
…11011010110110
312121102121002022
410302333122312
5131100211310
611552513142
71665014261
oct462773266
9177377068
1080475830
1141476756
1222b4b7b2
1313898b46
14a98bcd8
1570e9a55
hex4cbf6b6

80475830 has 16 divisors (see below), whose sum is σ = 152480880. Its totient is φ = 30496032.

The previous prime is 80475821. The next prime is 80475853. The reversal of 80475830 is 3857408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211589 + ... + 211968.

It is an arithmetic number, because the mean of its divisors is an integer number (9530055).

Almost surely, 280475830 is an apocalyptic number.

80475830 is a deficient number, since it is larger than the sum of its proper divisors (72005050).

80475830 is a wasteful number, since it uses less digits than its factorization.

80475830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423583.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 80475830 is about 8970.8321799039. The cubic root of 80475830 is about 431.7395370653.

The spelling of 80475830 in words is "eighty million, four hundred seventy-five thousand, eight hundred thirty".

Divisors: 1 2 5 10 19 38 95 190 423557 847114 2117785 4235570 8047583 16095166 40237915 80475830