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381478360 = 23579120721
BaseRepresentation
bin10110101111001…
…110010111011000
3222120211002221011
4112233032113120
51240124301420
6101504223304
712311340544
oct2657162730
9876732834
10381478360
1118637537a
12a790ab34
1361058053
1438942a24
152375595a
hex16bce5d8

381478360 has 32 divisors (see below), whose sum is σ = 869198400. Its totient is φ = 150658560.

The previous prime is 381478277. The next prime is 381478373. The reversal of 381478360 is 63874183.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 57201 + ... + 63520.

It is an arithmetic number, because the mean of its divisors is an integer number (27162450).

Almost surely, 2381478360 is an apocalyptic number.

It is an amenable number.

381478360 is an abundant number, since it is smaller than the sum of its proper divisors (487720040).

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

381478360 is a wasteful number, since it uses less digits than its factorization.

381478360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120811 (or 120807 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 381478360 is about 19531.4710147495. The cubic root of 381478360 is about 725.2537264928.

The spelling of 381478360 in words is "three hundred eighty-one million, four hundred seventy-eight thousand, three hundred sixty".

Divisors: 1 2 4 5 8 10 20 40 79 158 316 395 632 790 1580 3160 120721 241442 482884 603605 965768 1207210 2414420 4828840 9536959 19073918 38147836 47684795 76295672 95369590 190739180 381478360