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80378270 = 2571148261
BaseRepresentation
bin1001100101001…
…11100110011110
312121020122020222
410302213212132
5131034101040
611550441342
71664126660
oct462474636
9177218228
1080378270
114140a425
1222b03252
131386360b
14a964530
1570cabb5
hex4ca799e

80378270 has 16 divisors (see below), whose sum is σ = 165349728. Its totient is φ = 27558240.

The previous prime is 80378267. The next prime is 80378281. The reversal of 80378270 is 7287308.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 80378270.

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, 574061 + ... + 574200.

It is an arithmetic number, because the mean of its divisors is an integer number (10334358).

Almost surely, 280378270 is an apocalyptic number.

80378270 is an abundant number, since it is smaller than the sum of its proper divisors (84971458).

80378270 is a wasteful number, since it uses less digits than its factorization.

80378270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148275.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 80378270 is about 8965.3929082891. The cubic root of 80378270 is about 431.5650020881.

The spelling of 80378270 in words is "eighty million, three hundred seventy-eight thousand, two hundred seventy".

Divisors: 1 2 5 7 10 14 35 70 1148261 2296522 5741305 8037827 11482610 16075654 40189135 80378270