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80213903 = 7112345293
BaseRepresentation
bin1001100011111…
…11011110001111
312120221021210022
410301333132033
5131013321103
611543132355
71662543530
oct461773617
9176837708
1080213903
1141307990
1222a440bb
1313806863
14a920687
157097138
hex4c7f78f

80213903 has 16 divisors (see below), whose sum is σ = 104357376. Its totient is φ = 59785440.

The previous prime is 80213893. The next prime is 80213909. The reversal of 80213903 is 30931208.

It is not a de Polignac number, because 80213903 - 212 = 80209807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80213909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20876 + ... + 24417.

It is an arithmetic number, because the mean of its divisors is an integer number (6522336).

Almost surely, 280213903 is an apocalyptic number.

80213903 is a deficient number, since it is larger than the sum of its proper divisors (24143473).

80213903 is a wasteful number, since it uses less digits than its factorization.

80213903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45334.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 80213903 is about 8956.2214689008. The cubic root of 80213903 is about 431.2706296089.

The spelling of 80213903 in words is "eighty million, two hundred thirteen thousand, nine hundred three".

Divisors: 1 7 11 23 77 161 253 1771 45293 317051 498223 1041739 3487561 7292173 11459129 80213903