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67928412 = 2236318971
BaseRepresentation
bin1000000110010…
…00000101011100
311201211010021010
410003020011130
5114342202122
610423535220
71453245006
oct403100534
9151733233
1067928412
1135386692
121a8ba510
13110c4936
149043376
155e6be0c
hex40c815c

67928412 has 24 divisors (see below), whose sum is σ = 158768512. Its totient is φ = 22604400.

The previous prime is 67928389. The next prime is 67928423. The reversal of 67928412 is 21482976.

It is a super-2 number, since 2×679284122 = 9228538313683488, 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, 3087 + ... + 12057.

Almost surely, 267928412 is an apocalyptic number.

It is an amenable number.

67928412 is an abundant number, since it is smaller than the sum of its proper divisors (90840100).

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

67928412 is a wasteful number, since it uses less digits than its factorization.

67928412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9609 (or 9607 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 67928412 is about 8241.8694481289. The cubic root of 67928412 is about 408.0222258173.

The spelling of 67928412 in words is "sixty-seven million, nine hundred twenty-eight thousand, four hundred twelve".

Divisors: 1 2 3 4 6 12 631 1262 1893 2524 3786 7572 8971 17942 26913 35884 53826 107652 5660701 11321402 16982103 22642804 33964206 67928412