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80023143 = 326674381
BaseRepresentation
bin1001100010100…
…00111001100111
312120120121010010
410301100321213
5130441220033
611535101303
71661120424
oct461207147
9176517103
1080023143
1141197632
1222971833
131376aa95
14a8b0d4b
15705a863
hex4c50e67

80023143 has 4 divisors (see below), whose sum is σ = 106697528. Its totient is φ = 53348760.

The previous prime is 80023123. The next prime is 80023147. The reversal of 80023143 is 34132008.

It is a happy number.

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

It is not a de Polignac number, because 80023143 - 216 = 79957607 is a prime.

It is a super-3 number, since 3×800231433 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80023147) 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, 13337188 + ... + 13337193.

It is an arithmetic number, because the mean of its divisors is an integer number (26674382).

Almost surely, 280023143 is an apocalyptic number.

80023143 is a deficient number, since it is larger than the sum of its proper divisors (26674385).

80023143 is a wasteful number, since it uses less digits than its factorization.

80023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26674384.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 80023143 is about 8945.5655494776. The cubic root of 80023143 is about 430.9284840687.

The spelling of 80023143 in words is "eighty million, twenty-three thousand, one hundred forty-three".

Divisors: 1 3 26674381 80023143