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67920941 = 116174631
BaseRepresentation
bin1000000110001…
…10010000101101
311201210202000102
410003012100231
5114341432231
610423440445
71453214144
oct403062055
9151722012
1067920941
1135381010
121a8b6125
13110c140a
14904075b
155e69acb
hex40c642d

67920941 has 4 divisors (see below), whose sum is σ = 74095584. Its totient is φ = 61746300.

The previous prime is 67920913. The next prime is 67920949. The reversal of 67920941 is 14902976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2k-67920941 is a prime.

It is a super-2 number, since 2×679209412 = 9226508452650962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67920895 and 67920904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67920949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087305 + ... + 3087326.

It is an arithmetic number, because the mean of its divisors is an integer number (18523896).

Almost surely, 267920941 is an apocalyptic number.

It is an amenable number.

67920941 is a deficient number, since it is larger than the sum of its proper divisors (6174643).

67920941 is a wasteful number, since it uses less digits than its factorization.

67920941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6174642.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 67920941 is about 8241.4162011150. The cubic root of 67920941 is about 408.0072667070.

The spelling of 67920941 in words is "sixty-seven million, nine hundred twenty thousand, nine hundred forty-one".

Divisors: 1 11 6174631 67920941