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70750240 = 2551161659
BaseRepresentation
bin1000011011110…
…01000000100000
311221010111002021
410031321000200
5121103001430
611004231224
71516236631
oct415710040
9157114067
1070750240
1136a33780
121b83b514
1311872162
149579888
15632807a
hex4379020

70750240 has 96 divisors (see below), whose sum is σ = 185613120. Its totient is φ = 25267200.

The previous prime is 70750193. The next prime is 70750247. The reversal of 70750240 is 4205707.

It is not an unprimeable number, because it can be changed into a prime (70750247) 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, 107031 + ... + 107689.

It is an arithmetic number, because the mean of its divisors is an integer number (1933470).

Almost surely, 270750240 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 70750240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92806560).

70750240 is an abundant number, since it is smaller than the sum of its proper divisors (114862880).

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

70750240 is a wasteful number, since it uses less digits than its factorization.

70750240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 70750240 is about 8411.3161871374. The cubic root of 70750240 is about 413.5956595838.

Adding to 70750240 its reverse (4205707), we get a palindrome (74955947).

The spelling of 70750240 in words is "seventy million, seven hundred fifty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 61 80 88 110 122 160 176 220 244 305 352 440 488 610 659 671 880 976 1220 1318 1342 1760 1952 2440 2636 2684 3295 3355 4880 5272 5368 6590 6710 7249 9760 10544 10736 13180 13420 14498 21088 21472 26360 26840 28996 36245 40199 52720 53680 57992 72490 80398 105440 107360 115984 144980 160796 200995 231968 289960 321592 401990 442189 579920 643184 803980 884378 1159840 1286368 1607960 1768756 2210945 3215920 3537512 4421890 6431840 7075024 8843780 14150048 17687560 35375120 70750240