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630493023 = 3210164341
BaseRepresentation
bin100101100101001…
…000111101011111
31121221101100211110
4211211020331133
52242401234043
6142321353103
721424050036
oct4545107537
91557340743
10630493023
112a3995816
12157198793
13a08140c4
145da4371d
153a542b33
hex25948f5f

630493023 has 4 divisors (see below), whose sum is σ = 840657368. Its totient is φ = 420328680.

The previous prime is 630493021. The next prime is 630493027. The reversal of 630493023 is 320394036.

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

It is not a de Polignac number, because 630493023 - 21 = 630493021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630493021) 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 in 3 ways as a sum of consecutive naturals, for example, 105082168 + ... + 105082173.

It is an arithmetic number, because the mean of its divisors is an integer number (210164342).

Almost surely, 2630493023 is an apocalyptic number.

630493023 is a deficient number, since it is larger than the sum of its proper divisors (210164345).

630493023 is a wasteful number, since it uses less digits than its factorization.

630493023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210164344.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 630493023 is about 25109.6201285483. The cubic root of 630493023 is about 857.4854541699.

The spelling of 630493023 in words is "six hundred thirty million, four hundred ninety-three thousand, twenty-three".

Divisors: 1 3 210164341 630493023