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378900285 = 3525260019
BaseRepresentation
bin10110100101011…
…000111100111101
3222101222010110220
4112211120330331
51233444302120
6101333051553
712250412361
oct2645307475
9871863426
10378900285
11184974435
12a6a86bb9
136066476a
14384712a1
15233e6b40
hex16958f3d

378900285 has 8 divisors (see below), whose sum is σ = 606240480. Its totient is φ = 202080144.

The previous prime is 378900271. The next prime is 378900287. The reversal of 378900285 is 582009873.

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

It is not a de Polignac number, because 378900285 - 220 = 377851709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378900287) 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 7 ways as a sum of consecutive naturals, for example, 12629995 + ... + 12630024.

It is an arithmetic number, because the mean of its divisors is an integer number (75780060).

Almost surely, 2378900285 is an apocalyptic number.

It is an amenable number.

378900285 is a deficient number, since it is larger than the sum of its proper divisors (227340195).

378900285 is a wasteful number, since it uses less digits than its factorization.

378900285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25260027.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 378900285 is about 19465.3611577078. The cubic root of 378900285 is about 723.6162492482.

The spelling of 378900285 in words is "three hundred seventy-eight million, nine hundred thousand, two hundred eighty-five".

Divisors: 1 3 5 15 25260019 75780057 126300095 378900285