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93680881 = 713382983
BaseRepresentation
bin1011001010101…
…11010011110001
320112021111000021
411211113103301
5142440242011
613143523441
72215163050
oct545272361
9215244007
1093680881
1148975918
1227459581
1316540498
14c628397
158357471
hex59574f1

93680881 has 4 divisors (see below), whose sum is σ = 107063872. Its totient is φ = 80297892.

The previous prime is 93680843. The next prime is 93680947. The reversal of 93680881 is 18808639.

It is a happy number.

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 93680881 - 27 = 93680753 is a prime.

It is a super-2 number, since 2×936808812 = 17552214929872322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (93680281) 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, 6691485 + ... + 6691498.

It is an arithmetic number, because the mean of its divisors is an integer number (26765968).

Almost surely, 293680881 is an apocalyptic number.

It is an amenable number.

93680881 is a deficient number, since it is larger than the sum of its proper divisors (13382991).

93680881 is a wasteful number, since it uses less digits than its factorization.

93680881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382990.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 93680881 is about 9678.8884175818. Note that the first 3 decimals coincide. The cubic root of 93680881 is about 454.1684784860.

The spelling of 93680881 in words is "ninety-three million, six hundred eighty thousand, eight hundred eighty-one".

Divisors: 1 7 13382983 93680881