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378611680 = 2553176333
BaseRepresentation
bin10110100100010…
…010011111100000
3222101102110120211
4112210102133200
51233411033210
6101322543504
712245101066
oct2644223740
9871373524
10378611680
11184797617
12a6967b94
13605932a5
14383d8036
152338b38a
hex169127e0

378611680 has 48 divisors (see below), whose sum is σ = 923336064. Its totient is φ = 146557440.

The previous prime is 378611677. The next prime is 378611699. The reversal of 378611680 is 86116873.

378611680 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33207 + ... + 43126.

It is an arithmetic number, because the mean of its divisors is an integer number (19236168).

Almost surely, 2378611680 is an apocalyptic number.

It is an amenable number.

378611680 is an abundant number, since it is smaller than the sum of its proper divisors (544724384).

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

378611680 is a wasteful number, since it uses less digits than its factorization.

378611680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76379 (or 76371 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 378611680 is about 19457.9464486877. The cubic root of 378611680 is about 723.4324785465.

The spelling of 378611680 in words is "three hundred seventy-eight million, six hundred eleven thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 31 32 40 62 80 124 155 160 248 310 496 620 992 1240 2480 4960 76333 152666 305332 381665 610664 763330 1221328 1526660 2366323 2442656 3053320 4732646 6106640 9465292 11831615 12213280 18930584 23663230 37861168 47326460 75722336 94652920 189305840 378611680