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248489444 = 22779112337
BaseRepresentation
bin11101100111110…
…10010111100100
3122022120120102202
432303322113210
51002103130234
640353554032
76105061010
oct1663722744
9568516382
10248489444
111182a1885
126b275918
133c633c98
1425005540
1516c3677e
hexecfa5e4

248489444 has 24 divisors (see below), whose sum is σ = 503274240. Its totient is φ = 105146496.

The previous prime is 248489443. The next prime is 248489471. The reversal of 248489444 is 444984842.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (248489441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53957 + ... + 58380.

It is an arithmetic number, because the mean of its divisors is an integer number (20969760).

Almost surely, 2248489444 is an apocalyptic number.

It is an amenable number.

248489444 is an abundant number, since it is smaller than the sum of its proper divisors (254784796).

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

248489444 is a wasteful number, since it uses less digits than its factorization.

248489444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112427 (or 112425 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 47.

The square root of 248489444 is about 15763.5479508897. The cubic root of 248489444 is about 628.6891733675.

The spelling of 248489444 in words is "two hundred forty-eight million, four hundred eighty-nine thousand, four hundred forty-four".

Divisors: 1 2 4 7 14 28 79 158 316 553 1106 2212 112337 224674 449348 786359 1572718 3145436 8874623 17749246 35498492 62122361 124244722 248489444