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381481030 = 25718130109
BaseRepresentation
bin10110101111001…
…111000001000110
3222120211020121001
4112233033001012
51240124343110
6101504243514
712311351410
oct2657170106
9876736531
10381481030
11186377387
12a791059a
1361059328
14389439b0
152375663a
hex16bcf046

381481030 has 32 divisors (see below), whose sum is σ = 789122880. Its totient is φ = 130066560.

The previous prime is 381481027. The next prime is 381481057. The reversal of 381481030 is 30184183.

It is a self number, because there is not a number n which added to its sum of digits gives 381481030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385 + ... + 27724.

It is an arithmetic number, because the mean of its divisors is an integer number (24660090).

Almost surely, 2381481030 is an apocalyptic number.

381481030 is an abundant number, since it is smaller than the sum of its proper divisors (407641850).

381481030 is a wasteful number, since it uses less digits than its factorization.

381481030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30304.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 381481030 is about 19531.5393658564. The cubic root of 381481030 is about 725.2554185267.

The spelling of 381481030 in words is "three hundred eighty-one million, four hundred eighty-one thousand, thirty".

Divisors: 1 2 5 7 10 14 35 70 181 362 905 1267 1810 2534 6335 12670 30109 60218 150545 210763 301090 421526 1053815 2107630 5449729 10899458 27248645 38148103 54497290 76296206 190740515 381481030