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20656062030 = 235688535401
BaseRepresentation
bin10011001111001100…
…100111111001001110
31222022120000200011110
4103033030213321032
5314300422441110
613253403032450
71330606426122
oct231714477116
958276020143
1020656062030
11883a89914a
12400580b726
131c425a1c16
14ddd4a3582
1580d65ea20
hex4cf327e4e

20656062030 has 16 divisors (see below), whose sum is σ = 49574548944. Its totient is φ = 5508283200.

The previous prime is 20656061999. The next prime is 20656062047. The reversal of 20656062030 is 3026065602.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 688535401 = 20656062030 / (2 + 0 + 6 + 5 + 6 + 0 + 6 + 2 + 0 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344267671 + ... + 344267730.

It is an arithmetic number, because the mean of its divisors is an integer number (3098409309).

Almost surely, 220656062030 is an apocalyptic number.

20656062030 is an abundant number, since it is smaller than the sum of its proper divisors (28918486914).

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

20656062030 is a wasteful number, since it uses less digits than its factorization.

20656062030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688535411.

The product of its (nonzero) digits is 12960, while the sum is 30.

The spelling of 20656062030 in words is "twenty billion, six hundred fifty-six million, sixty-two thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 688535401 1377070802 2065606203 3442677005 4131212406 6885354010 10328031015 20656062030