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80069873 = 136159221
BaseRepresentation
bin1001100010111…
…00010011110001
312120122222012212
410301130103301
5130444213443
611540101505
71661403602
oct461342361
9176588185
1080069873
1141219754
1222994895
1313786130
14a8c3da9
157069618
hex4c5c4f1

80069873 has 4 divisors (see below), whose sum is σ = 86229108. Its totient is φ = 73910640.

The previous prime is 80069867. The next prime is 80069917. The reversal of 80069873 is 37896008.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17707264 + 62362609 = 4208^2 + 7897^2 .

It is a cyclic number.

It is not a de Polignac number, because 80069873 - 214 = 80053489 is a prime.

It is a super-2 number, since 2×800698732 = 12822369124472258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80069873.

It is not an unprimeable number, because it can be changed into a prime (80069833) 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 in 3 ways as a sum of consecutive naturals, for example, 3079598 + ... + 3079623.

It is an arithmetic number, because the mean of its divisors is an integer number (21557277).

Almost surely, 280069873 is an apocalyptic number.

It is an amenable number.

80069873 is a deficient number, since it is larger than the sum of its proper divisors (6159235).

80069873 is a wasteful number, since it uses less digits than its factorization.

80069873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6159234.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 80069873 is about 8948.1770769247. The cubic root of 80069873 is about 431.0123488476.

The spelling of 80069873 in words is "eighty million, sixty-nine thousand, eight hundred seventy-three".

Divisors: 1 13 6159221 80069873