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90493859530 = 2540032260651
BaseRepresentation
bin101010001000111011…
…0101011011011001010
322122120200011101001001
41110101312223123022
52440312412001110
6105323341245214
76352344054154
oct1242166533312
9278520141031
1090493859530
1135418474068
121565626380a
1386c2237459
144546735ad4
1525498d063a
hex1511dab6ca

90493859530 has 16 divisors (see below), whose sum is σ = 162929710944. Its totient is φ = 36188485200.

The previous prime is 90493859441. The next prime is 90493859531. The reversal of 90493859530 is 3595839409.

It is a happy number.

It is a super-2 number, since 2×904938595302 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90493859531) 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, 1090296 + ... + 1170355.

It is an arithmetic number, because the mean of its divisors is an integer number (10183106934).

Almost surely, 290493859530 is an apocalyptic number.

90493859530 is a deficient number, since it is larger than the sum of its proper divisors (72435851414).

90493859530 is a wasteful number, since it uses less digits than its factorization.

90493859530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264661.

The product of its (nonzero) digits is 5248800, while the sum is 55.

The spelling of 90493859530 in words is "ninety billion, four hundred ninety-three million, eight hundred fifty-nine thousand, five hundred thirty".

Divisors: 1 2 5 10 4003 8006 20015 40030 2260651 4521302 11303255 22606510 9049385953 18098771906 45246929765 90493859530