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12301002020 = 2255009122789
BaseRepresentation
bin10110111010011001…
…00110010100100100
31011202021111122111102
423131030212110210
5200143024031040
65352341055232
7613554535436
oct133514462444
934667448442
1012301002020
11524265a97a
1224736b7518
131210623728
148499b2656
154bedcb515
hex2dd326524

12301002020 has 24 divisors (see below), whose sum is σ = 25837471800. Its totient is φ = 4919378432.

The previous prime is 12301002019. The next prime is 12301002023. The reversal of 12301002020 is 2020010321.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4527405796 + 7773596224 = 67286^2 + 88168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12301001992 and 12301002010.

It is not an unprimeable number, because it can be changed into a prime (12301002023) 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, 38786 + ... + 161574.

It is an arithmetic number, because the mean of its divisors is an integer number (1076561325).

Almost surely, 212301002020 is an apocalyptic number.

12301002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12301002020 is an abundant number, since it is smaller than the sum of its proper divisors (13536469780).

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

12301002020 is a wasteful number, since it uses less digits than its factorization.

12301002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127807 (or 127805 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 12301002020 its reverse (2020010321), we get a palindrome (14321012341).

The spelling of 12301002020 in words is "twelve billion, three hundred one million, two thousand, twenty".

Divisors: 1 2 4 5 10 20 5009 10018 20036 25045 50090 100180 122789 245578 491156 613945 1227890 2455780 615050101 1230100202 2460200404 3075250505 6150501010 12301002020