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1383722880 = 27351983457

1383722880 has 256 divisors, whose sum is σ = 4708972800. Its totient is φ = 344604672.

The previous prime is 1383722869. The next prime is 1383722881. The reversal of 1383722880 is 882273831.

1383722880 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1383722881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3027612 + ... + 3028068.

It is an arithmetic number, because the mean of its divisors is an integer number (18394425).

Almost surely, 21383722880 is an apocalyptic number.

1383722880 is a gapful number since it is divisible by the number (10) 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 1383722880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354486400).

1383722880 is an abundant number, since it is smaller than the sum of its proper divisors (3325249920).

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

1383722880 is a wasteful number, since it uses less digits than its factorization.

1383722880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1383722880 is about 37198.4257731426. The cubic root of 1383722880 is about 1114.3365461924.

The spelling of 1383722880 in words is "one billion, three hundred eighty-three million, seven hundred twenty-two thousand, eight hundred eighty".