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120630245 = 561395509
BaseRepresentation
bin1110011000010…
…10101111100101
322101222122120212
413030022233211
5221340131440
615545305205
72663224451
oct714125745
9271878525
10120630245
116210231a
1234495205
131bcb7a58
1412041661
15a8cc465
hex730abe5

120630245 has 8 divisors (see below), whose sum is σ = 147129720. Its totient is φ = 94921920.

The previous prime is 120630233. The next prime is 120630253. The reversal of 120630245 is 542036021.

It can be written as a sum of positive squares in 4 ways, for example, as 3319684 + 117310561 = 1822^2 + 10831^2 .

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

It is not a de Polignac number, because 120630245 - 28 = 120629989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120630245.

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, 197450 + ... + 198059.

It is an arithmetic number, because the mean of its divisors is an integer number (18391215).

Almost surely, 2120630245 is an apocalyptic number.

It is an amenable number.

120630245 is a deficient number, since it is larger than the sum of its proper divisors (26499475).

120630245 is an equidigital number, since it uses as much as digits as its factorization.

120630245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395575.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 120630245 is about 10983.1800950362. The cubic root of 120630245 is about 494.1044174365.

Adding to 120630245 its reverse (542036021), we get a palindrome (662666266).

The spelling of 120630245 in words is "one hundred twenty million, six hundred thirty thousand, two hundred forty-five".

Divisors: 1 5 61 305 395509 1977545 24126049 120630245