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244389457 = 13194632137
BaseRepresentation
bin11101001000100…
…01011001010001
3122000212021022101
432210101121101
51000030430312
640130040401
76025163464
oct1644213121
9560767271
10244389457
11115a51464
1269a19101
133b829a60
14246592db
15166c6a57
hexe911651

244389457 has 16 divisors (see below), whose sum is σ = 277768960. Its totient is φ = 213155712.

The previous prime is 244389451. The next prime is 244389493. The reversal of 244389457 is 754983442.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 244389457 - 215 = 244356689 is a prime.

It is a Leyland number of the form 125 + 512.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244389451) 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, 113293 + ... + 115429.

It is an arithmetic number, because the mean of its divisors is an integer number (17360560).

Almost surely, 2244389457 is an apocalyptic number.

It is an amenable number.

244389457 is a deficient number, since it is larger than the sum of its proper divisors (33379503).

244389457 is a wasteful number, since it uses less digits than its factorization.

244389457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632.

The product of its digits is 967680, while the sum is 46.

The square root of 244389457 is about 15632.9605961251. The cubic root of 244389457 is about 625.2122645419.

The spelling of 244389457 in words is "two hundred forty-four million, three hundred eighty-nine thousand, four hundred fifty-seven".

Divisors: 1 13 19 247 463 2137 6019 8797 27781 40603 114361 527839 989431 12862603 18799189 244389457