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70378680 = 23353118919
BaseRepresentation
bin1000011000111…
…10010010111000
311220102121101210
410030132102320
5121004104210
610552243120
71513131441
oct414362270
9156377353
1070378680
11367aa5a9
121b6a04a0
1311771cb8
1494c02c8
1562a2e20
hex431e4b8

70378680 has 64 divisors (see below), whose sum is σ = 217958400. Its totient is φ = 18161280.

The previous prime is 70378667. The next prime is 70378697. The reversal of 70378680 is 8687307.

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, 5740 + ... + 13179.

It is an arithmetic number, because the mean of its divisors is an integer number (3405600).

Almost surely, 270378680 is an apocalyptic number.

It is an amenable number.

70378680 is an abundant number, since it is smaller than the sum of its proper divisors (147579720).

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

70378680 is a wasteful number, since it uses less digits than its factorization.

70378680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18964 (or 18960 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 70378680 is about 8389.2002002575. The cubic root of 70378680 is about 412.8703597543.

The spelling of 70378680 in words is "seventy million, three hundred seventy-eight thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 31 40 60 62 93 120 124 155 186 248 310 372 465 620 744 930 1240 1860 3720 18919 37838 56757 75676 94595 113514 151352 189190 227028 283785 378380 454056 567570 586489 756760 1135140 1172978 1759467 2270280 2345956 2932445 3518934 4691912 5864890 7037868 8797335 11729780 14075736 17594670 23459560 35189340 70378680