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1380787800 = 233527536203
BaseRepresentation
bin101001001001101…
…0010011001011000
310120020012021202220
41102103102121120
510311440202200
6345003024040
746134334260
oct12223223130
93506167686
101380787800
11649467347
1232650b020
131900b2b02
14d15507a0
158134c4a0
hex524d2658

1380787800 has 192 divisors, whose sum is σ = 4985038080. Its totient is φ = 309603840.

The previous prime is 1380787799. The next prime is 1380787823. The reversal of 1380787800 is 87870831.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 219499 + ... + 225701.

It is an arithmetic number, because the mean of its divisors is an integer number (25963740).

Almost surely, 21380787800 is an apocalyptic number.

1380787800 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 1380787800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492519040).

1380787800 is an abundant number, since it is smaller than the sum of its proper divisors (3604250280).

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

1380787800 is a wasteful number, since it uses less digits than its factorization.

1380787800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6282 (or 6273 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 1380787800 is about 37158.9531607122. The cubic root of 1380787800 is about 1113.5480978192.

The spelling of 1380787800 in words is "one billion, three hundred eighty million, seven hundred eighty-seven thousand, eight hundred".