Search a number
-
+
2007649280 = 210571331139
BaseRepresentation
bin111011110101010…
…0100110000000000
312011220202011001202
41313222210300000
513102424234110
6531114520332
7100515510620
oct16752446000
95156664052
102007649280
119402a168a
124804360a8
1325cc24c70
141508ca880
15bb3c40a5
hex77aa4c00

2007649280 has 352 divisors, whose sum is σ = 6162616320. Its totient is φ = 610467840.

The previous prime is 2007649271. The next prime is 2007649283. The reversal of 2007649280 is 829467002.

It is not an unprimeable number, because it can be changed into a prime (2007649283) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14443451 + ... + 14443589.

Almost surely, 22007649280 is an apocalyptic number.

2007649280 is a gapful number since it is divisible by the number (20) 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 2007649280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3081308160).

2007649280 is an abundant number, since it is smaller than the sum of its proper divisors (4154967040).

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

2007649280 is a wasteful number, since it uses less digits than its factorization.

2007649280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 2007649280 is about 44806.7994840069. The cubic root of 2007649280 is about 1261.5252546094.

The spelling of 2007649280 in words is "two billion, seven million, six hundred forty-nine thousand, two hundred eighty".