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220244241 = 3729361649
BaseRepresentation
bin11010010000010…
…10100100010001
3120100102120022010
431020022210101
5422340303431
633504333133
75313021330
oct1510124421
9510376263
10220244241
1110335a838
12619141a9
1336824949
1421371d17
1514507846
hexd20a911

220244241 has 16 divisors (see below), whose sum is σ = 347184000. Its totient is φ = 121513728.

The previous prime is 220244207. The next prime is 220244261. The reversal of 220244241 is 142442022.

It is not a de Polignac number, because 220244241 - 29 = 220243729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (220244261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180216 + ... + 181433.

It is an arithmetic number, because the mean of its divisors is an integer number (21699000).

Almost surely, 2220244241 is an apocalyptic number.

220244241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220244241 is a deficient number, since it is larger than the sum of its proper divisors (126939759).

220244241 is a wasteful number, since it uses less digits than its factorization.

220244241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361688.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 220244241 is about 14840.6280527476. The cubic root of 220244241 is about 603.9043905577.

Adding to 220244241 its reverse (142442022), we get a palindrome (362686263).

The spelling of 220244241 in words is "two hundred twenty million, two hundred forty-four thousand, two hundred forty-one".

Divisors: 1 3 7 21 29 87 203 609 361649 1084947 2531543 7594629 10487821 31463463 73414747 220244241