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8290023557 = 257275311717
BaseRepresentation
bin1111011100001111…
…11011100010000101
3210101202010211102112
413232013323202011
5113434221223212
63450335550405
7412302015614
oct75607734205
923352124375
108290023557
113574558442
12173438b405
13a21659caa
1458900187b
15337bd8422
hex1ee1fb885

8290023557 has 8 divisors (see below), whose sum is σ = 8326013976. Its totient is φ = 8254062592.

The previous prime is 8290023529. The next prime is 8290023593. The reversal of 8290023557 is 7553200928.

It can be written as a sum of positive squares in 4 ways, for example, as 2813135521 + 5476888036 = 53039^2 + 74006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8290023557 - 224 = 8273246341 is a prime.

It is a super-2 number, since 2×82900235572 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8290023517) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 701663 + ... + 713379.

It is an arithmetic number, because the mean of its divisors is an integer number (1040751747).

Almost surely, 28290023557 is an apocalyptic number.

It is an amenable number.

8290023557 is a deficient number, since it is larger than the sum of its proper divisors (35990419).

8290023557 is a wasteful number, since it uses less digits than its factorization.

8290023557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14727.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 8290023557 is about 91049.5664844155. The cubic root of 8290023557 is about 2023.8823121962.

The spelling of 8290023557 in words is "eight billion, two hundred ninety million, twenty-three thousand, five hundred fifty-seven".

Divisors: 1 257 2753 11717 707521 3011269 32256901 8290023557