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20582570894 = 210291285447
BaseRepresentation
bin10011001010110100…
…010001101110001110
31222010102201221021112
4103022310101232032
5314123114232034
613242215532022
71326024652214
oct231264215616
958112657245
1020582570894
118802363176
123ba508a012
131c302b0342
14dd3812cb4
15806e947ce
hex4cad11b8e

20582570894 has 4 divisors (see below), whose sum is σ = 30873856344. Its totient is φ = 10291285446.

The previous prime is 20582570861. The next prime is 20582570909. The reversal of 20582570894 is 49807528502.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5145642722 + ... + 5145642725.

It is an arithmetic number, because the mean of its divisors is an integer number (7718464086).

Almost surely, 220582570894 is an apocalyptic number.

20582570894 is a deficient number, since it is larger than the sum of its proper divisors (10291285450).

20582570894 is a wasteful number, since it uses less digits than its factorization.

20582570894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10291285449.

The product of its (nonzero) digits is 1612800, while the sum is 50.

The spelling of 20582570894 in words is "twenty billion, five hundred eighty-two million, five hundred seventy thousand, eight hundred ninety-four".

Divisors: 1 2 10291285447 20582570894