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144844390 = 25411492371
BaseRepresentation
bin10001010001000…
…10011001100110
3101002112212011001
420220202121212
5244040010030
622212303514
73406104565
oct1050423146
9332485131
10144844390
1174840809
1240611b9a
1324015352
1415345bdc
15cab1cca
hex8a22666

144844390 has 32 divisors (see below), whose sum is σ = 268984800. Its totient is φ = 56121600.

The previous prime is 144844373. The next prime is 144844397. The reversal of 144844390 is 93448441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144844397) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 59905 + ... + 62275.

It is an arithmetic number, because the mean of its divisors is an integer number (8405775).

Almost surely, 2144844390 is an apocalyptic number.

144844390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144844390 is a deficient number, since it is larger than the sum of its proper divisors (124140410).

144844390 is a wasteful number, since it uses less digits than its factorization.

144844390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 144844390 is about 12035.1314907649. The cubic root of 144844390 is about 525.1707864616.

The spelling of 144844390 in words is "one hundred forty-four million, eight hundred forty-four thousand, three hundred ninety".