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1442330020 = 22572116501
BaseRepresentation
bin101010111111000…
…0011010110100100
310201111222221211101
41111332003112210
510423214030040
6355042045444
750512413535
oct12576032644
93644887741
101442330020
1168018098a
12343049884
1319ca7ca21
14d97b068c
158695709a
hex55f835a4

1442330020 has 12 divisors (see below), whose sum is σ = 3028893084. Its totient is φ = 576932000.

The previous prime is 1442330011. The next prime is 1442330039. The reversal of 1442330020 is 200332441.

It can be written as a sum of positive squares in 2 ways, for example, as 913973824 + 528356196 = 30232^2 + 22986^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1442330020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36058231 + ... + 36058270.

It is an arithmetic number, because the mean of its divisors is an integer number (252407757).

Almost surely, 21442330020 is an apocalyptic number.

1442330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442330020 is an abundant number, since it is smaller than the sum of its proper divisors (1586563064).

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

1442330020 is a wasteful number, since it uses less digits than its factorization.

1442330020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72116510 (or 72116508 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1442330020 is about 37978.0202222285. The cubic root of 1442330020 is about 1129.8519711070.

Adding to 1442330020 its reverse (200332441), we get a palindrome (1642662461).

The spelling of 1442330020 in words is "one billion, four hundred forty-two million, three hundred thirty thousand, twenty".

Divisors: 1 2 4 5 10 20 72116501 144233002 288466004 360582505 721165010 1442330020