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144641454 = 23139173431
BaseRepresentation
bin10001001111100…
…00110110101110
3101002011112202220
420213300312232
5244012011304
622204100210
73404301126
oct1047606656
9332145686
10144641454
11747122a1
1240534666
1323c73b79
14152d1c86
15ca71ad9
hex89f0dae

144641454 has 16 divisors (see below), whose sum is σ = 291365760. Its totient is φ = 47866680.

The previous prime is 144641429. The next prime is 144641461. The reversal of 144641454 is 454146441.

144641454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85882 + ... + 87549.

It is an arithmetic number, because the mean of its divisors is an integer number (18210360).

Almost surely, 2144641454 is an apocalyptic number.

144641454 is an abundant number, since it is smaller than the sum of its proper divisors (146724306).

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

144641454 is a wasteful number, since it uses less digits than its factorization.

144641454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173575.

The product of its digits is 30720, while the sum is 33.

The square root of 144641454 is about 12026.6975516972. The cubic root of 144641454 is about 524.9254061820.

Adding to 144641454 its reverse (454146441), we get a palindrome (598787895).

The spelling of 144641454 in words is "one hundred forty-four million, six hundred forty-one thousand, four hundred fifty-four".

Divisors: 1 2 3 6 139 278 417 834 173431 346862 520293 1040586 24106909 48213818 72320727 144641454