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67868276 = 2274356369
BaseRepresentation
bin1000000101110…
…01011001110100
311201201001202212
410002321121310
5114333241101
610422352552
71452604460
oct402713164
9151631685
1067868276
1135345493
121a88b758
13110a3458
1490294a0
155e591bb
hex40b9674

67868276 has 24 divisors (see below), whose sum is σ = 138895680. Its totient is φ = 28409472.

The previous prime is 67868237. The next prime is 67868287. The reversal of 67868276 is 67286876.

It is a happy number.

It is a super-2 number, since 2×678682762 = 9212205774424352, 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 7 ways as a sum of consecutive naturals, for example, 26981 + ... + 29388.

It is an arithmetic number, because the mean of its divisors is an integer number (5787320).

Almost surely, 267868276 is an apocalyptic number.

It is an amenable number.

67868276 is an abundant number, since it is smaller than the sum of its proper divisors (71027404).

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

67868276 is a wasteful number, since it uses less digits than its factorization.

67868276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56423 (or 56421 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 67868276 is about 8238.2204389055. The cubic root of 67868276 is about 407.9017849585.

The spelling of 67868276 in words is "sixty-seven million, eight hundred sixty-eight thousand, two hundred seventy-six".

Divisors: 1 2 4 7 14 28 43 86 172 301 602 1204 56369 112738 225476 394583 789166 1578332 2423867 4847734 9695468 16967069 33934138 67868276