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1380699306 = 232743325307
BaseRepresentation
bin101001001001011…
…1100110010101010
310120020000210101100
41102102330302222
510311424334211
6345001102230
746133515260
oct12222746252
93506023340
101380699306
11649406908
12326487976
1319008174c
14d152a430
1581331156
hex524bccaa

1380699306 has 48 divisors (see below), whose sum is σ = 3426905664. Its totient is φ = 393558912.

The previous prime is 1380699293. The next prime is 1380699329. The reversal of 1380699306 is 6039960831.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41905 + ... + 67211.

It is an arithmetic number, because the mean of its divisors is an integer number (71393868).

Almost surely, 21380699306 is an apocalyptic number.

1380699306 is an abundant number, since it is smaller than the sum of its proper divisors (2046206358).

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

1380699306 is a wasteful number, since it uses less digits than its factorization.

1380699306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25755 (or 25752 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 1380699306 is about 37157.7623922647. The cubic root of 1380699306 is about 1113.5243083973.

The spelling of 1380699306 in words is "one billion, three hundred eighty million, six hundred ninety-nine thousand, three hundred six".

Divisors: 1 2 3 6 7 9 14 18 21 42 63 126 433 866 1299 2598 3031 3897 6062 7794 9093 18186 25307 27279 50614 54558 75921 151842 177149 227763 354298 455526 531447 1062894 1594341 3188682 10957931 21915862 32873793 65747586 76705517 98621379 153411034 197242758 230116551 460233102 690349653 1380699306