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80019202 = 240009601
BaseRepresentation
bin1001100010011…
…11111100000010
312120120101201011
410301033330002
5130441103302
611535031134
71661103064
oct461177402
9176511634
1080019202
114119467a
122296b4aa
1313769053
14a8ad734
1570595d7
hex4c4ff02

80019202 has 4 divisors (see below), whose sum is σ = 120028806. Its totient is φ = 40009600.

The previous prime is 80019193. The next prime is 80019209. The reversal of 80019202 is 20291008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 78872161 + 1147041 = 8881^2 + 1071^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80019209) by changing a digit.

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 as a sum of consecutive naturals, namely, 20004799 + ... + 20004802.

Almost surely, 280019202 is an apocalyptic number.

80019202 is a deficient number, since it is larger than the sum of its proper divisors (40009604).

80019202 is a wasteful number, since it uses less digits than its factorization.

80019202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40009603.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 80019202 is about 8945.3452700273. The cubic root of 80019202 is about 430.9214097943.

It can be divided in two parts, 800 and 19202, that added together give a palindrome (20002).

The spelling of 80019202 in words is "eighty million, nineteen thousand, two hundred two".

Divisors: 1 2 40009601 80019202