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630380180 = 22555195711
BaseRepresentation
bin100101100100101…
…101011010010100
31121221011122001002
4211210231122110
52242334131210
6142315122432
721423100043
oct4544553224
91557148032
10630380180
112a3918a61
12157143418
13a07a4931
145da1455a
153a51e4a5
hex2592d694

630380180 has 24 divisors (see below), whose sum is σ = 1324270080. Its totient is φ = 252062240.

The previous prime is 630380173. The next prime is 630380189. The reversal of 630380180 is 81083036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630380189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107525 + ... + 113235.

It is an arithmetic number, because the mean of its divisors is an integer number (55177920).

Almost surely, 2630380180 is an apocalyptic number.

It is an amenable number.

630380180 is an abundant number, since it is smaller than the sum of its proper divisors (693889900).

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

630380180 is a wasteful number, since it uses less digits than its factorization.

630380180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11239 (or 11237 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 630380180 is about 25107.3730206886. The cubic root of 630380180 is about 857.4342947329.

The spelling of 630380180 in words is "six hundred thirty million, three hundred eighty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 5519 5711 11038 11422 22076 22844 27595 28555 55190 57110 110380 114220 31519009 63038018 126076036 157595045 315190090 630380180