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80768573 = 791022387
BaseRepresentation
bin1001101000001…
…10111000111101
312121222110122122
410310012320331
5131134043243
612003052325
72000343614
oct464067075
9177873578
1080768573
1141656696
12230710a5
131396c172
14aa2687b
157156668
hex4d06e3d

80768573 has 4 divisors (see below), whose sum is σ = 81791040. Its totient is φ = 79746108.

The previous prime is 80768551. The next prime is 80768599. The reversal of 80768573 is 37586708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-80768573 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 (80768503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511115 + ... + 511272.

It is an arithmetic number, because the mean of its divisors is an integer number (20447760).

Almost surely, 280768573 is an apocalyptic number.

It is an amenable number.

80768573 is a deficient number, since it is larger than the sum of its proper divisors (1022467).

80768573 is a wasteful number, since it uses less digits than its factorization.

80768573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022466.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 80768573 is about 8987.1337477530. The cubic root of 80768573 is about 432.2624095168.

The spelling of 80768573 in words is "eighty million, seven hundred sixty-eight thousand, five hundred seventy-three".

Divisors: 1 79 1022387 80768573