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80328613 = 363122123
BaseRepresentation
bin1001100100110…
…11011110100101
312121011010010211
410302123132211
5131031003423
611545415421
71663532131
oct462333645
9177133124
1080328613
1141386092
1222a9a571
1313846b31
14a9503c1
1570bb10d
hex4c9b7a5

80328613 has 4 divisors (see below), whose sum is σ = 80354368. Its totient is φ = 80302860.

The previous prime is 80328569. The next prime is 80328623. The reversal of 80328613 is 31682308.

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 not a de Polignac number, because 80328613 - 213 = 80320421 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 (80328623) 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, 7431 + ... + 14692.

It is an arithmetic number, because the mean of its divisors is an integer number (20088592).

Almost surely, 280328613 is an apocalyptic number.

It is an amenable number.

80328613 is a deficient number, since it is larger than the sum of its proper divisors (25755).

80328613 is a wasteful number, since it uses less digits than its factorization.

80328613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25754.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 80328613 is about 8962.6231093358. The cubic root of 80328613 is about 431.4761114051.

The spelling of 80328613 in words is "eighty million, three hundred twenty-eight thousand, six hundred thirteen".

Divisors: 1 3631 22123 80328613