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67712060 = 22513312271
BaseRepresentation
bin1000000100100…
…11010000111100
311201102010111002
410002103100330
5114313241220
610415145432
71451354153
oct402232074
9151363432
1067712060
1135249089
121a815278
131104a310
148dc859a
155e27c75
hex409343c

67712060 has 72 divisors (see below), whose sum is σ = 158816448. Its totient is φ = 24105600.

The previous prime is 67712041. The next prime is 67712077. The reversal of 67712060 is 6021776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 249725 + ... + 249995.

It is an arithmetic number, because the mean of its divisors is an integer number (2205784).

Almost surely, 267712060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67712060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79408224).

67712060 is an abundant number, since it is smaller than the sum of its proper divisors (91104388).

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

67712060 is a wasteful number, since it uses less digits than its factorization.

67712060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 67712060 is about 8228.7338029614. The cubic root of 67712060 is about 407.5885814932.

The spelling of 67712060 in words is "sixty-seven million, seven hundred twelve thousand, sixty".

Divisors: 1 2 4 5 10 13 20 26 31 52 62 65 124 130 155 260 271 310 403 542 620 806 961 1084 1355 1612 1922 2015 2710 3523 3844 4030 4805 5420 7046 8060 8401 9610 12493 14092 16802 17615 19220 24986 33604 35230 42005 49972 62465 70460 84010 109213 124930 168020 218426 249860 260431 436852 520862 546065 1041724 1092130 1302155 2184260 2604310 3385603 5208620 6771206 13542412 16928015 33856030 67712060