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1442743488 = 2636172107
BaseRepresentation
bin101010111111110…
…1000010011000000
310201112202222000000
41111333220103000
510423320242423
6355055000000
750516055144
oct12577502300
93645688000
101442743488
1168043359a
12343209000
1319cb95c94
14d987b224
15869d9843
hex55fe84c0

1442743488 has 294 divisors, whose sum is σ = 4602417516. Its totient is φ = 448395264.

The previous prime is 1442743483. The next prime is 1442743529. The reversal of 1442743488 is 8843472441.

1442743488 is a `hidden beast` number, since 144 + 27 + 4 + 3 + 488 = 666.

It is a super-2 number, since 2×14427434882 = 4163017544332812288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442743483) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 13483531 + ... + 13483637.

Almost surely, 21442743488 is an apocalyptic number.

1442743488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1442743488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2301208758).

1442743488 is an abundant number, since it is smaller than the sum of its proper divisors (3159674028).

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

1442743488 is an equidigital number, since it uses as much as digits as its factorization.

1442743488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 129 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 1442743488 is about 37983.4633491997. The cubic root of 1442743488 is about 1129.9599244408.

The spelling of 1442743488 in words is "one billion, four hundred forty-two million, seven hundred forty-three thousand, four hundred eighty-eight".