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444200020 = 2251110119991
BaseRepresentation
bin11010011110011…
…111010001010100
31010221211200212121
4122132133101110
51402203400040
6112024425324
714002431535
oct3236372124
91127750777
10444200020
11208815060
12104918244
1371048a64
1442dcc68c
1528ee4c4a
hex1a79f454

444200020 has 48 divisors (see below), whose sum is σ = 1027748736. Its totient is φ = 159920000.

The previous prime is 444200011. The next prime is 444200077. The reversal of 444200020 is 20002444.

It is a junction number, because it is equal to n+sod(n) for n = 444199967 and 444200003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12225 + ... + 32215.

It is an arithmetic number, because the mean of its divisors is an integer number (21411432).

Almost surely, 2444200020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513874368).

444200020 is an abundant number, since it is smaller than the sum of its proper divisors (583548716).

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

444200020 is a wasteful number, since it uses less digits than its factorization.

444200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112 (or 20110 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 444200020 is about 21076.0532358409. The cubic root of 444200020 is about 763.0029046438.

Adding to 444200020 its reverse (20002444), we get a palindrome (464202464).

The spelling of 444200020 in words is "four hundred forty-four million, two hundred thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 101 110 202 220 404 505 1010 1111 2020 2222 4444 5555 11110 19991 22220 39982 79964 99955 199910 219901 399820 439802 879604 1099505 2019091 2199010 4038182 4398020 8076364 10095455 20190910 22210001 40381820 44420002 88840004 111050005 222100010 444200020