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67038020 = 2257478843
BaseRepresentation
bin1111111110111…
…0101101000100
311200010212212122
43333232231010
5114130204040
610352505112
71442546060
oct377565504
9150125778
1067038020
1134928725
121a54b198
1310b7258a
148c90aa0
155d431b5
hex3feeb44

67038020 has 24 divisors (see below), whose sum is σ = 160891584. Its totient is φ = 22984416.

The previous prime is 67038011. The next prime is 67038029. The reversal of 67038020 is 2083076.

It is an interprime number because it is at equal distance from previous prime (67038011) and next prime (67038029).

It is a super-2 number, since 2×670380202 = 8988192251040800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67038029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239282 + ... + 239561.

It is an arithmetic number, because the mean of its divisors is an integer number (6703816).

Almost surely, 267038020 is an apocalyptic number.

It is an amenable number.

67038020 is an abundant number, since it is smaller than the sum of its proper divisors (93853564).

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

67038020 is a wasteful number, since it uses less digits than its factorization.

67038020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478859 (or 478857 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 67038020 is about 8187.6748836284. The cubic root of 67038020 is about 406.2316214171.

The spelling of 67038020 in words is "sixty-seven million, thirty-eight thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 478843 957686 1915372 2394215 3351901 4788430 6703802 9576860 13407604 16759505 33519010 67038020