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8144988 = 223678749
BaseRepresentation
bin11111000100100001011100
3120022210211020
4133010201130
54041114423
6450324140
7126142215
oct37044134
916283736
108144988
1146634a5
122889650
1318c2427
14112040c
15aad4e3
hex7c485c

8144988 has 12 divisors (see below), whose sum is σ = 19005000. Its totient is φ = 2714992.

The previous prime is 8144963. The next prime is 8144999. The reversal of 8144988 is 8894418.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339363 + ... + 339386.

It is an arithmetic number, because the mean of its divisors is an integer number (1583750).

Almost surely, 28144988 is an apocalyptic number.

It is an amenable number.

8144988 is an abundant number, since it is smaller than the sum of its proper divisors (10860012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8144988 is a wasteful number, since it uses less digits than its factorization.

8144988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678756 (or 678754 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 8144988 is about 2853.9425362120. The cubic root of 8144988 is about 201.2010068103.

The spelling of 8144988 in words is "eight million, one hundred forty-four thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 678749 1357498 2036247 2714996 4072494 8144988