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80144630 = 2517471439
BaseRepresentation
bin1001100011011…
…10100011110110
312120210202202122
410301232203312
5131004112010
611541435542
71662134546
oct461564366
9176722678
1080144630
114126a935
1222a0bbb2
13137b1177
14a903326
157081855
hex4c6e8f6

80144630 has 16 divisors (see below), whose sum is σ = 152746560. Its totient is φ = 30172032.

The previous prime is 80144599. The next prime is 80144653. The reversal of 80144630 is 3644108.

It is a self number, because there is not a number n which added to its sum of digits gives 80144630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235550 + ... + 235889.

It is an arithmetic number, because the mean of its divisors is an integer number (9546660).

Almost surely, 280144630 is an apocalyptic number.

80144630 is a deficient number, since it is larger than the sum of its proper divisors (72601930).

80144630 is a wasteful number, since it uses less digits than its factorization.

80144630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471463.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 80144630 is about 8952.3533218925. The cubic root of 80144630 is about 431.1464449248.

Adding to 80144630 its reverse (3644108), we get a palindrome (83788738).

The spelling of 80144630 in words is "eighty million, one hundred forty-four thousand, six hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 471439 942878 2357195 4714390 8014463 16028926 40072315 80144630