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1662886368 = 2533111343313
BaseRepresentation
bin110001100011101…
…1010000111100000
311021220000101021000
41203013122013200
511401144330433
6433001232000
756131205133
oct14307320740
94256011230
101662886368
11783724160
123a4a92600
13206683740
1411abc421a
159aec2113
hex631da1e0

1662886368 has 384 divisors, whose sum is σ = 5849141760. Its totient is φ = 452874240.

The previous prime is 1662886363. The next prime is 1662886373. The reversal of 1662886368 is 8636882661.

1662886368 is a `hidden beast` number, since 1 + 6 + 628 + 8 + 6 + 3 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1662886363) and next prime (1662886373).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662886363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5312580 + ... + 5312892.

It is an arithmetic number, because the mean of its divisors is an integer number (15232140).

Almost surely, 21662886368 is an apocalyptic number.

1662886368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662886368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2924570880).

1662886368 is an abundant number, since it is smaller than the sum of its proper divisors (4186255392).

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

1662886368 is a wasteful number, since it uses less digits than its factorization.

1662886368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 385 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 1662886368 is about 40778.5037489116. The cubic root of 1662886368 is about 1184.7340149690.

The spelling of 1662886368 in words is "one billion, six hundred sixty-two million, eight hundred eighty-six thousand, three hundred sixty-eight".