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1361770450 = 25227235409
BaseRepresentation
bin101000100101010…
…1111011111010010
310111220102002212121
41101022233133102
510242103123300
6343043244454
745513600145
oct12112573722
93456362777
101361770450
11639758327
1232007972a
13189184a41
14ccc0005c
157e84281a
hex512af7d2

1361770450 has 12 divisors (see below), whose sum is σ = 2532893130. Its totient is φ = 544708160.

The previous prime is 1361770439. The next prime is 1361770457. The reversal of 1361770450 is 540771631.

It can be written as a sum of positive squares in 3 ways, for example, as 581629689 + 780140761 = 24117^2 + 27931^2 .

It is not an unprimeable number, because it can be changed into a prime (1361770457) 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 5 ways as a sum of consecutive naturals, for example, 13617655 + ... + 13617754.

Almost surely, 21361770450 is an apocalyptic number.

1361770450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1361770450 is a deficient number, since it is larger than the sum of its proper divisors (1171122680).

1361770450 is a wasteful number, since it uses less digits than its factorization.

1361770450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27235421 (or 27235416 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1361770450 is about 36902.1740551963. The cubic root of 1361770450 is about 1108.4122118974.

The spelling of 1361770450 in words is "one billion, three hundred sixty-one million, seven hundred seventy thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 27235409 54470818 136177045 272354090 680885225 1361770450