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378980 = 22572707
BaseRepresentation
bin1011100100001100100
3201020212022
41130201210
544111410
612042312
73135620
oct1344144
9636768
10378980
11239808
12163398
13103664
149c180
1577455
hex5c864

378980 has 24 divisors (see below), whose sum is σ = 909888. Its totient is φ = 129888.

The previous prime is 378977. The next prime is 378997. The reversal of 378980 is 89873.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 378980.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 378980.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1214 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (37912).

2378980 is an apocalyptic number.

It is an amenable number.

378980 is an abundant number, since it is smaller than the sum of its proper divisors (530908).

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

378980 is a wasteful number, since it uses less digits than its factorization.

378980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 378980 is about 615.6135151213. The cubic root of 378980 is about 72.3666991732.

The spelling of 378980 in words is "three hundred seventy-eight thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 2707 5414 10828 13535 18949 27070 37898 54140 75796 94745 189490 378980