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897248590 = 257196710069
BaseRepresentation
bin110101011110101…
…110110101001110
32022112022221200021
4311132232311032
53314143423330
6225011052354
731143326050
oct6536566516
92275287607
10897248590
11420523167
122105a10ba
13113b72234
14872418d0
1553b8667a
hex357aed4e

897248590 has 64 divisors (see below), whose sum is σ = 1972108800. Its totient is φ = 287058816.

The previous prime is 897248587. The next prime is 897248623. The reversal of 897248590 is 95842798.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84076 + ... + 94144.

It is an arithmetic number, because the mean of its divisors is an integer number (30814200).

Almost surely, 2897248590 is an apocalyptic number.

897248590 is an abundant number, since it is smaller than the sum of its proper divisors (1074860210).

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

897248590 is a wasteful number, since it uses less digits than its factorization.

897248590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10169.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 897248590 is about 29954.1080655058. The cubic root of 897248590 is about 964.5045072750.

The spelling of 897248590 in words is "eight hundred ninety-seven million, two hundred forty-eight thousand, five hundred ninety".

Divisors: 1 2 5 7 10 14 19 35 38 67 70 95 133 134 190 266 335 469 665 670 938 1273 1330 2345 2546 4690 6365 8911 10069 12730 17822 20138 44555 50345 70483 89110 100690 140966 191311 352415 382622 674623 704830 956555 1339177 1349246 1913110 2678354 3373115 4722361 6695885 6746230 9444722 12817837 13391770 23611805 25635674 47223610 64089185 89724859 128178370 179449718 448624295 897248590