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20380386192 = 243424591379
BaseRepresentation
bin10010111110110001…
…000000001110010000
31221121100021220000020
4102332301000032100
5313214334324232
613210154223440
71321021265355
oct227661001620
957540256006
1020380386192
118709218881
123b49424b80
131bca43c81a
14db4a2262c
157e4357e2c
hex4bec40390

20380386192 has 20 divisors (see below), whose sum is σ = 52649331120. Its totient is φ = 6793462048.

The previous prime is 20380386179. The next prime is 20380386197. The reversal of 20380386192 is 29168308302.

It is not an unprimeable number, because it can be changed into a prime (20380386197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212295642 + ... + 212295737.

It is an arithmetic number, because the mean of its divisors is an integer number (2632466556).

Almost surely, 220380386192 is an apocalyptic number.

It is an amenable number.

20380386192 is an abundant number, since it is smaller than the sum of its proper divisors (32268944928).

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

20380386192 is a wasteful number, since it uses less digits than its factorization.

20380386192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424591390 (or 424591384 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 20380386192 in words is "twenty billion, three hundred eighty million, three hundred eighty-six thousand, one hundred ninety-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 424591379 849182758 1273774137 1698365516 2547548274 3396731032 5095096548 6793462064 10190193096 20380386192