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80238947 = 290927583
BaseRepresentation
bin1001100100001…
…01100101100011
312120222120010212
410302011211203
5131020121242
611543444335
71663006535
oct462054543
9176876125
1080238947
1141324788
1222a566ab
1313815089
14a929855
15709e782
hex4c85963

80238947 has 4 divisors (see below), whose sum is σ = 80269440. Its totient is φ = 80208456.

The previous prime is 80238931. The next prime is 80238967. The reversal of 80238947 is 74983208.

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

It is a cyclic number.

It is not a de Polignac number, because 80238947 - 24 = 80238931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80238967) 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, 10883 + ... + 16700.

It is an arithmetic number, because the mean of its divisors is an integer number (20067360).

Almost surely, 280238947 is an apocalyptic number.

80238947 is a deficient number, since it is larger than the sum of its proper divisors (30493).

80238947 is a wasteful number, since it uses less digits than its factorization.

80238947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30492.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 80238947 is about 8957.6194940397. The cubic root of 80238947 is about 431.3155080211.

The spelling of 80238947 in words is "eighty million, two hundred thirty-eight thousand, nine hundred forty-seven".

Divisors: 1 2909 27583 80238947