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80630895 = 355375393
BaseRepresentation
bin1001100111001…
…01010001101111
312121201110210110
410303211101233
5131120142040
612000111103
71666231332
oct463452157
9177643713
1080630895
1141572204
1223005493
13139215b7
14a9cc619
15712a980
hex4ce546f

80630895 has 8 divisors (see below), whose sum is σ = 129009456. Its totient is φ = 43003136.

The previous prime is 80630863. The next prime is 80630899. The reversal of 80630895 is 59803608.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80630895 - 25 = 80630863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80630899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2687682 + ... + 2687711.

It is an arithmetic number, because the mean of its divisors is an integer number (16126182).

Almost surely, 280630895 is an apocalyptic number.

80630895 is a deficient number, since it is larger than the sum of its proper divisors (48378561).

80630895 is a wasteful number, since it uses less digits than its factorization.

80630895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375401.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 80630895 is about 8979.4707527783. The cubic root of 80630895 is about 432.0166585226.

The spelling of 80630895 in words is "eighty million, six hundred thirty thousand, eight hundred ninety-five".

Divisors: 1 3 5 15 5375393 16126179 26876965 80630895