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248480128 = 2713314817
BaseRepresentation
bin11101100111110…
…00000110000000
3122022120002122201
432303320012000
51002102331003
640353442544
76105021601
oct1663700600
9568502581
10248480128
11118295886
126b270454
133c62c980
1425001da8
1516c33b1d
hexecf8180

248480128 has 64 divisors (see below), whose sum is σ = 550408320. Its totient is φ = 110960640.

The previous prime is 248480087. The next prime is 248480129. The reversal of 248480128 is 821084842.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248480129) 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, 49176 + ... + 53992.

It is an arithmetic number, because the mean of its divisors is an integer number (8600130).

Almost surely, 2248480128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 248480128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275204160).

248480128 is an abundant number, since it is smaller than the sum of its proper divisors (301928192).

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

248480128 is a wasteful number, since it uses less digits than its factorization.

248480128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875 (or 4863 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 37.

The square root of 248480128 is about 15763.2524562668. The cubic root of 248480128 is about 628.6813166401.

It can be divided in two parts, 248 and 480128, that multiplied together give a square (119071744 = 109122).

The spelling of 248480128 in words is "two hundred forty-eight million, four hundred eighty thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 13 16 26 31 32 52 62 64 104 124 128 208 248 403 416 496 806 832 992 1612 1664 1984 3224 3968 4817 6448 9634 12896 19268 25792 38536 51584 62621 77072 125242 149327 154144 250484 298654 308288 500968 597308 616576 1001936 1194616 1941251 2003872 2389232 3882502 4007744 4778464 7765004 8015488 9556928 15530008 19113856 31060016 62120032 124240064 248480128