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67687038 = 23210934499
BaseRepresentation
bin1000000100011…
…01001001111110
311201100212011100
410002031021332
5114311441123
610414433530
71451221206
oct402151176
9151325140
1067687038
1135231301
121a8028a6
131103bb03
148dbd406
155e20643
hex408d27e

67687038 has 24 divisors (see below), whose sum is σ = 148005000. Its totient is φ = 22354704.

The previous prime is 67687027. The next prime is 67687051. The reversal of 67687038 is 83078676.

It is a super-2 number, since 2×676870382 = 9163070226426888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 67686984 and 67687002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15288 + ... + 19211.

It is an arithmetic number, because the mean of its divisors is an integer number (6166875).

Almost surely, 267687038 is an apocalyptic number.

67687038 is an abundant number, since it is smaller than the sum of its proper divisors (80317962).

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

67687038 is a wasteful number, since it uses less digits than its factorization.

67687038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34616 (or 34613 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 67687038 is about 8227.2132584491. The cubic root of 67687038 is about 407.5383691775.

The spelling of 67687038 in words is "sixty-seven million, six hundred eighty-seven thousand, thirty-eight".

Divisors: 1 2 3 6 9 18 109 218 327 654 981 1962 34499 68998 103497 206994 310491 620982 3760391 7520782 11281173 22562346 33843519 67687038