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6144030021 = 347238118301
BaseRepresentation
bin1011011100011011…
…00111010101000101
3120212012002001201110
411232031213111011
5100040332430041
62453355515233
7305153251653
oct55615472505
916765061643
106144030021
112673165768
121235758b19
1376bb8752c
14423dc1dd3
1525e5d8516
hex16e367545

6144030021 has 16 divisors (see below), whose sum is σ = 8370309888. Its totient is φ = 4006968000.

The previous prime is 6144029953. The next prime is 6144030023. The reversal of 6144030021 is 1200304416.

It is not a de Polignac number, because 6144030021 - 29 = 6144029509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6144030021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6144030023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326571 + ... + 344871.

It is an arithmetic number, because the mean of its divisors is an integer number (523144368).

Almost surely, 26144030021 is an apocalyptic number.

It is an amenable number.

6144030021 is a deficient number, since it is larger than the sum of its proper divisors (2226279867).

6144030021 is a wasteful number, since it uses less digits than its factorization.

6144030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20732.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6144030021 is about 78383.8632691704. The cubic root of 6144030021 is about 1831.5457711939.

Adding to 6144030021 its reverse (1200304416), we get a palindrome (7344334437).

The spelling of 6144030021 in words is "six billion, one hundred forty-four million, thirty thousand, twenty-one".

Divisors: 1 3 47 141 2381 7143 18301 54903 111907 335721 860147 2580441 43574681 130724043 2048010007 6144030021