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67245380 = 22510633163
BaseRepresentation
bin1000000001000…
…01010101000100
311200112102022122
410000201111010
5114203323010
610401145112
71444401446
oct400412504
9150472278
1067245380
1134a5a4a4
121a62b198
1310c15a87
148d06496
155d84855
hex4021544

67245380 has 24 divisors (see below), whose sum is σ = 141392832. Its totient is φ = 26864352.

The previous prime is 67245379. The next prime is 67245397. The reversal of 67245380 is 8354276.

It is a happy number.

It is a super-2 number, since 2×672453802 = 9043882262688800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67245380.

It is an unprimeable number.

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, 19679 + ... + 22841.

It is an arithmetic number, because the mean of its divisors is an integer number (5891368).

Almost surely, 267245380 is an apocalyptic number.

It is an amenable number.

67245380 is an abundant number, since it is smaller than the sum of its proper divisors (74147452).

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

67245380 is a wasteful number, since it uses less digits than its factorization.

67245380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235 (or 4233 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 67245380 is about 8200.3280422188. The cubic root of 67245380 is about 406.6500381388.

The spelling of 67245380 in words is "sixty-seven million, two hundred forty-five thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1063 2126 3163 4252 5315 6326 10630 12652 15815 21260 31630 63260 3362269 6724538 13449076 16811345 33622690 67245380