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2442400420 = 225736132729
BaseRepresentation
bin1001000110010100…
…0001001010100100
320022012210210111211
42101211001022210
520000223303140
61042205041204
7114345026635
oct22145011244
96265723454
102442400420
111043742649
12581b56204
132cc012c65
1419253988c
15e464e2ea
hex919412a4

2442400420 has 48 divisors (see below), whose sum is σ = 5209691760. Its totient is φ = 961652736.

The previous prime is 2442400399. The next prime is 2442400427. The reversal of 2442400420 is 240042442.

It can be written as a sum of positive squares in 8 ways, for example, as 26481316 + 2415919104 = 5146^2 + 49152^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2442400391 and 2442400400.

It is not an unprimeable number, because it can be changed into a prime (2442400427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893616 + ... + 896344.

It is an arithmetic number, because the mean of its divisors is an integer number (108535245).

Almost surely, 22442400420 is an apocalyptic number.

2442400420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2442400420 is an abundant number, since it is smaller than the sum of its proper divisors (2767291340).

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

2442400420 is a wasteful number, since it uses less digits than its factorization.

2442400420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 3422 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 2442400420 is about 49420.6477092318. The cubic root of 2442400420 is about 1346.7044297430.

Adding to 2442400420 its reverse (240042442), we get a palindrome (2682442862).

The spelling of 2442400420 in words is "two billion, four hundred forty-two million, four hundred thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 73 146 292 365 613 730 1226 1460 2452 2729 3065 5458 6130 10916 12260 13645 27290 44749 54580 89498 178996 199217 223745 398434 447490 796868 894980 996085 1672877 1992170 3345754 3984340 6691508 8364385 16728770 33457540 122120021 244240042 488480084 610600105 1221200210 2442400420