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630970386 = 23105161731
BaseRepresentation
bin100101100110111…
…101100000010010
31121222021121122120
4211212331200102
52243012023021
6142335515110
721431105544
oct4546754022
91558247576
10630970386
112a4191432
12157388a96
13a0950477
145db29694
153a5d92c6
hex259bd812

630970386 has 8 divisors (see below), whose sum is σ = 1261940784. Its totient is φ = 210323460.

The previous prime is 630970369. The next prime is 630970387. The reversal of 630970386 is 683079036.

It is a sphenic number, since it is the product of 3 distinct primes.

630970386 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (630970387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52580860 + ... + 52580871.

It is an arithmetic number, because the mean of its divisors is an integer number (157742598).

Almost surely, 2630970386 is an apocalyptic number.

630970386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

630970386 is a wasteful number, since it uses less digits than its factorization.

630970386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105161736.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 630970386 is about 25119.1239098819. The cubic root of 630970386 is about 857.7018079079.

The spelling of 630970386 in words is "six hundred thirty million, nine hundred seventy thousand, three hundred eighty-six".

Divisors: 1 2 3 6 105161731 210323462 315485193 630970386