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20380660030 = 252777357639
BaseRepresentation
bin10010111110110010…
…000011000100111110
31221121100210210122101
4102332302003010332
5313214422110110
613210204135314
71321023515623
oct227662030476
957540723571
1020380660030
118709395595
123b4953753a
131bca507363
14db4a9434a
157e43ae13a
hex4bec8313e

20380660030 has 16 divisors (see below), whose sum is σ = 36817630560. Its totient is φ = 8122832352.

The previous prime is 20380659989. The next prime is 20380660033. The reversal of 20380660030 is 3006608302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380660033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3676050 + ... + 3681589.

It is an arithmetic number, because the mean of its divisors is an integer number (2301101910).

Almost surely, 220380660030 is an apocalyptic number.

20380660030 is a deficient number, since it is larger than the sum of its proper divisors (16436970530).

20380660030 is a wasteful number, since it uses less digits than its factorization.

20380660030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357923.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 20380660030 in words is "twenty billion, three hundred eighty million, six hundred sixty thousand, thirty".

Divisors: 1 2 5 10 277 554 1385 2770 7357639 14715278 36788195 73576390 2038066003 4076132006 10190330015 20380660030