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7987054 = 23993527
BaseRepresentation
bin11110011101111101101110
3120000210011211
4132131331232
54021041204
6443105034
7124613605
oct36357556
916023154
107987054
114565879
12281217a
13186858a
1410bca3c
15a7b804
hex79df6e

7987054 has 4 divisors (see below), whose sum is σ = 11980584. Its totient is φ = 3993526.

The previous prime is 7987051. The next prime is 7987069. The reversal of 7987054 is 4507897.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7986998 and 7987016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7987051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996762 + ... + 1996765.

It is an arithmetic number, because the mean of its divisors is an integer number (2995146).

Almost surely, 27987054 is an apocalyptic number.

7987054 is a deficient number, since it is larger than the sum of its proper divisors (3993530).

7987054 is a wasteful number, since it uses less digits than its factorization.

7987054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993529.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 7987054 is about 2826.1376470370. The cubic root of 7987054 is about 199.8920584202.

The spelling of 7987054 in words is "seven million, nine hundred eighty-seven thousand, fifty-four".

Divisors: 1 2 3993527 7987054