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245486620 = 22512274331
BaseRepresentation
bin11101010000111…
…01010000011100
3122002221000100001
432220131100130
51000321032440
640205344044
76040413301
oct1650352034
9562830301
10245486620
11116630805
126a268024
133bb22272
14248630a8
1516841b9a
hexea1d41c

245486620 has 12 divisors (see below), whose sum is σ = 515521944. Its totient is φ = 98194640.

The previous prime is 245486611. The next prime is 245486621. The reversal of 245486620 is 26684542.

It is a self number, because there is not a number n which added to its sum of digits gives 245486620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245486621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6137146 + ... + 6137185.

It is an arithmetic number, because the mean of its divisors is an integer number (42960162).

Almost surely, 2245486620 is an apocalyptic number.

245486620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245486620 is an abundant number, since it is smaller than the sum of its proper divisors (270035324).

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

245486620 is a wasteful number, since it uses less digits than its factorization.

245486620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12274340 (or 12274338 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 245486620 is about 15668.0126372173. The cubic root of 245486620 is about 626.1464780550.

The spelling of 245486620 in words is "two hundred forty-five million, four hundred eighty-six thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 12274331 24548662 49097324 61371655 122743310 245486620