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76007993 = 92981817
BaseRepresentation
bin1001000011111…
…00101000111001
312022000121100212
410201330220321
5123424223433
611313040505
71612025435
oct441745071
9168017325
1076007993
11399a4a26
1221556135
1312993359
14a1479c5
156a15d48
hex487ca39

76007993 has 4 divisors (see below), whose sum is σ = 76090740. Its totient is φ = 75925248.

The previous prime is 76007983. The next prime is 76008017. The reversal of 76007993 is 39970067.

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 1841449 + 74166544 = 1357^2 + 8612^2 .

It is a cyclic number.

It is not a de Polignac number, because 76007993 - 212 = 76003897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76007993.

It is not an unprimeable number, because it can be changed into a prime (76007963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39980 + ... + 41837.

It is an arithmetic number, because the mean of its divisors is an integer number (19022685).

Almost surely, 276007993 is an apocalyptic number.

It is an amenable number.

76007993 is a deficient number, since it is larger than the sum of its proper divisors (82747).

76007993 is an equidigital number, since it uses as much as digits as its factorization.

76007993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82746.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 76007993 is about 8718.2563050188. The cubic root of 76007993 is about 423.5972074391.

The spelling of 76007993 in words is "seventy-six million, seven thousand, nine hundred ninety-three".

Divisors: 1 929 81817 76007993