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80230709 = 136171593
BaseRepresentation
bin1001100100000…
…11100100110101
312120222010211202
410302003210311
5131014340314
611543342245
71662643526
oct462034465
9176863752
1080230709
1141319579
1222a51985
13138113c0
14a92684d
15709c0de
hex4c83935

80230709 has 4 divisors (see below), whose sum is σ = 86402316. Its totient is φ = 74059104.

The previous prime is 80230699. The next prime is 80230721. The reversal of 80230709 is 90703208.

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 16630084 + 63600625 = 4078^2 + 7975^2 .

It is a cyclic number.

It is not a de Polignac number, because 80230709 - 28 = 80230453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80230729) 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, 3085784 + ... + 3085809.

It is an arithmetic number, because the mean of its divisors is an integer number (21600579).

Almost surely, 280230709 is an apocalyptic number.

It is an amenable number.

80230709 is a deficient number, since it is larger than the sum of its proper divisors (6171607).

80230709 is a wasteful number, since it uses less digits than its factorization.

80230709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171606.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 80230709 is about 8957.1596502463. The cubic root of 80230709 is about 431.3007466992.

The spelling of 80230709 in words is "eighty million, two hundred thirty thousand, seven hundred nine".

Divisors: 1 13 6171593 80230709