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20021200002 = 23313710972467
BaseRepresentation
bin10010101001010110…
…110100010010000010
31220200022102100012000
4102221112310102002
5312000411400002
613110403444430
71306100251326
oct225126642202
956608370160
1020021200002
118544499991
123a69086716
131b70bbb30b
14d7d043986
157c2a5761c
hex4a95b4482

20021200002 has 64 divisors (see below), whose sum is σ = 44875347840. Its totient is φ = 6616297728.

The previous prime is 20021199977. The next prime is 20021200021. The reversal of 20021200002 is 20000212002.

Adding to 20021200002 its reverse (20000212002), we get a palindrome (40021412004).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8114373 + ... + 8116839.

It is an arithmetic number, because the mean of its divisors is an integer number (701177310).

Almost surely, 220021200002 is an apocalyptic number.

20021200002 is an abundant number, since it is smaller than the sum of its proper divisors (24854147838).

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

20021200002 is a wasteful number, since it uses less digits than its factorization.

20021200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The spelling of 20021200002 in words is "twenty billion, twenty-one million, two hundred thousand, two".

Divisors: 1 2 3 6 9 18 27 54 137 274 411 822 1097 1233 2194 2466 2467 3291 3699 4934 6582 7398 7401 9873 14802 19746 22203 29619 44406 59238 66609 133218 150289 300578 337979 450867 675958 901734 1013937 1352601 2027874 2705202 2706299 3041811 4057803 5412598 6083622 8115606 8118897 9125433 16237794 18250866 24356691 48713382 73070073 146140146 370762963 741525926 1112288889 2224577778 3336866667 6673733334 10010600001 20021200002