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20201020002 = 2331559239957
BaseRepresentation
bin10010110100000100…
…110001101001100010
31221010211210010212000
4102310010301221202
5312332430120002
613140305544430
71313412560022
oct226404615142
957124703760
1020201020002
118626a49359
123ab9345116
131b9c22b297
14d98c91a82
157d372761c
hex4b4131a62

20201020002 has 32 divisors (see below), whose sum is σ = 44920137600. Its totient is φ = 6729326064.

The previous prime is 20201019997. The next prime is 20201020003. The reversal of 20201020002 is 20002010202.

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

It is not an unprimeable number, because it can be changed into a prime (20201020003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35793 + ... + 204164.

It is an arithmetic number, because the mean of its divisors is an integer number (1403754300).

Almost surely, 220201020002 is an apocalyptic number.

20201020002 is an abundant number, since it is smaller than the sum of its proper divisors (24719117598).

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

20201020002 is a wasteful number, since it uses less digits than its factorization.

20201020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241527 (or 241521 counting only the distinct ones).

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

Adding to 20201020002 its reverse (20002010202), we get a palindrome (40203030204).

The spelling of 20201020002 in words is "twenty billion, two hundred one million, twenty thousand, two".

Divisors: 1 2 3 6 9 18 27 54 1559 3118 4677 9354 14031 28062 42093 84186 239957 479914 719871 1439742 2159613 4319226 6478839 12957678 374092963 748185926 1122278889 2244557778 3366836667 6733673334 10100510001 20201020002