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20858006275 = 524671786553
BaseRepresentation
bin10011011011001110…
…111110101100000011
31222211122000111120221
4103123032332230003
5320204122200100
613325415243511
71335611061631
oct233316765403
958748014527
1020858006275
118933889917
124061379597
131c7538a162
14101c230351
1582125001a
hex4db3beb03

20858006275 has 12 divisors (see below), whose sum is σ = 25919325432. Its totient is φ = 16650664640.

The previous prime is 20858006243. The next prime is 20858006287. The reversal of 20858006275 is 57260085802.

It is not a de Polignac number, because 20858006275 - 25 = 20858006243 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 881602 + ... + 904951.

It is an arithmetic number, because the mean of its divisors is an integer number (2159943786).

Almost surely, 220858006275 is an apocalyptic number.

20858006275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20858006275 is a deficient number, since it is larger than the sum of its proper divisors (5061319157).

20858006275 is a wasteful number, since it uses less digits than its factorization.

20858006275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787030 (or 1787025 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 20858006275 in words is "twenty billion, eight hundred fifty-eight million, six thousand, two hundred seventy-five".

Divisors: 1 5 25 467 2335 11675 1786553 8932765 44663825 834320251 4171601255 20858006275