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67898960 = 245848737
BaseRepresentation
bin1000000110000…
…00111001010000
311201202121212022
410003000321100
5114340231320
610423151012
71453063103
oct403007120
9151677768
1067898960
1135366548
121a8a5468
13110b43cc
14903673a
155e63325
hex40c0e50

67898960 has 20 divisors (see below), whose sum is σ = 157865268. Its totient is φ = 27159552.

The previous prime is 67898923. The next prime is 67899011. The reversal of 67898960 is 6989876.

It can be written as a sum of positive squares in 2 ways, for example, as 11888704 + 56010256 = 3448^2 + 7484^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×678989602 = 9220537538163200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424289 + ... + 424448.

Almost surely, 267898960 is an apocalyptic number.

It is an amenable number.

67898960 is an abundant number, since it is smaller than the sum of its proper divisors (89966308).

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

67898960 is a wasteful number, since it uses less digits than its factorization.

67898960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848750 (or 848744 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 53.

The square root of 67898960 is about 8240.0825238586. The cubic root of 67898960 is about 407.9632480031.

The spelling of 67898960 in words is "sixty-seven million, eight hundred ninety-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 848737 1697474 3394948 4243685 6789896 8487370 13579792 16974740 33949480 67898960