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80194984 = 23173715937
BaseRepresentation
bin1001100011110…
…10110110101000
312120220022211121
410301322312220
5131012214414
611542505024
71662434422
oct461726650
9176808747
1080194984
11412a4751
1222a35174
13137cb06c
14a917812
157091724
hex4c7ada8

80194984 has 32 divisors (see below), whose sum is σ = 163523880. Its totient is φ = 36716544.

The previous prime is 80194969. The next prime is 80194987. The reversal of 80194984 is 48949108.

It can be written as a sum of positive squares in 4 ways, for example, as 79602084 + 592900 = 8922^2 + 770^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80194984.

It is not an unprimeable number, because it can be changed into a prime (80194987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937 + ... + 13000.

Almost surely, 280194984 is an apocalyptic number.

It is an amenable number.

80194984 is an abundant number, since it is smaller than the sum of its proper divisors (83328896).

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

80194984 is a wasteful number, since it uses less digits than its factorization.

80194984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15997 (or 15993 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 80194984 is about 8955.1652134397. The cubic root of 80194984 is about 431.2367208962.

The spelling of 80194984 in words is "eighty million, one hundred ninety-four thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 17 34 37 68 74 136 148 296 629 1258 2516 5032 15937 31874 63748 127496 270929 541858 589669 1083716 1179338 2167432 2358676 4717352 10024373 20048746 40097492 80194984