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427221368 = 2379778649
BaseRepresentation
bin11001011101101…
…110000101111000
31002202220002112122
4121131232011320
51333332040433
6110220500412
713405215230
oct3135560570
91082802478
10427221368
111aa178812
12bb0aa708
136a682912
1440a4ccc0
152778e198
hex1976e178

427221368 has 32 divisors (see below), whose sum is σ = 924924000. Its totient is φ = 181204992.

The previous prime is 427221367. The next prime is 427221371. The reversal of 427221368 is 863122724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427221367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33893 + ... + 44756.

It is an arithmetic number, because the mean of its divisors is an integer number (28903875).

Almost surely, 2427221368 is an apocalyptic number.

It is an amenable number.

427221368 is an abundant number, since it is smaller than the sum of its proper divisors (497702632).

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

427221368 is a wasteful number, since it uses less digits than its factorization.

427221368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78759 (or 78755 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 427221368 is about 20669.3339999140. Note that the first 3 decimals coincide. The cubic root of 427221368 is about 753.1549280371.

The spelling of 427221368 in words is "four hundred twenty-seven million, two hundred twenty-one thousand, three hundred sixty-eight".

Divisors: 1 2 4 7 8 14 28 56 97 194 388 679 776 1358 2716 5432 78649 157298 314596 550543 629192 1101086 2202172 4404344 7628953 15257906 30515812 53402671 61031624 106805342 213610684 427221368