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221346041 = 738382561
BaseRepresentation
bin11010011000101…
…11100011111001
3120102111112200112
431030113203321
5423131033131
633544114105
75325260510
oct1514274371
9512445615
10221346041
11103a42614
1262165935
1336b1c2b7
142157b677
151467402b
hexd3178f9

221346041 has 8 divisors (see below), whose sum is σ = 253630464. Its totient is φ = 189227520.

The previous prime is 221346031. The next prime is 221346101. The reversal of 221346041 is 140643122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-221346041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221345998 and 221346016.

It is not an unprimeable number, because it can be changed into a prime (221346011) 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, 38600 + ... + 43961.

It is an arithmetic number, because the mean of its divisors is an integer number (31703808).

Almost surely, 2221346041 is an apocalyptic number.

It is an amenable number.

221346041 is a deficient number, since it is larger than the sum of its proper divisors (32284423).

221346041 is an equidigital number, since it uses as much as digits as its factorization.

221346041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82951.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 221346041 is about 14877.7028132706. The cubic root of 221346041 is about 604.9097522648.

Adding to 221346041 its reverse (140643122), we get a palindrome (361989163).

The spelling of 221346041 in words is "two hundred twenty-one million, three hundred forty-six thousand, forty-one".

Divisors: 1 7 383 2681 82561 577927 31620863 221346041