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67241620 = 2258340507
BaseRepresentation
bin1000000001000…
…00011010010100
311200112020011101
410000200122110
5114203212440
610401115444
71444354465
oct400403224
9150466141
1067241620
1134a57696
121a628b84
1310c14154
148d04d6c
155d8369a
hex4020694

67241620 has 24 divisors (see below), whose sum is σ = 142912224. Its totient is φ = 26571936.

The previous prime is 67241591. The next prime is 67241623. The reversal of 67241620 is 2614276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67241623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18594 + ... + 21913.

It is an arithmetic number, because the mean of its divisors is an integer number (5954676).

Almost surely, 267241620 is an apocalyptic number.

It is an amenable number.

67241620 is an abundant number, since it is smaller than the sum of its proper divisors (75670604).

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

67241620 is a wasteful number, since it uses less digits than its factorization.

67241620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40599 (or 40597 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 67241620 is about 8200.0987798928. The cubic root of 67241620 is about 406.6424587698.

Adding to 67241620 its reverse (2614276), we get a palindrome (69855896).

The spelling of 67241620 in words is "sixty-seven million, two hundred forty-one thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 83 166 332 415 830 1660 40507 81014 162028 202535 405070 810140 3362081 6724162 13448324 16810405 33620810 67241620