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2197830488 = 237376117389
BaseRepresentation
bin1000001100000000…
…0011101101011000
312200011121100122012
42003000003231120
514000121033423
61002031045052
7105315152030
oct20300035530
95604540565
102197830488
11a28688637
12514070788
13290452019
1416bc748c0
15cce3e078
hex83003b58

2197830488 has 64 divisors (see below), whose sum is σ = 4916500800. Its totient is φ = 901393920.

The previous prime is 2197830487. The next prime is 2197830521. The reversal of 2197830488 is 8840387912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197830487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117698 + ... + 135086.

It is an arithmetic number, because the mean of its divisors is an integer number (76820325).

Almost surely, 22197830488 is an apocalyptic number.

2197830488 is a gapful number since it is divisible by the number (28) 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 2197830488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2458250400).

2197830488 is an abundant number, since it is smaller than the sum of its proper divisors (2718670312).

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

2197830488 is a wasteful number, since it uses less digits than its factorization.

2197830488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17500 (or 17496 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 2197830488 is about 46881.0248181500. The cubic root of 2197830488 is about 1300.1637837037.

The spelling of 2197830488 in words is "two billion, one hundred ninety-seven million, eight hundred thirty thousand, four hundred eighty-eight".

Divisors: 1 2 4 7 8 14 28 37 56 61 74 122 148 244 259 296 427 488 518 854 1036 1708 2072 2257 3416 4514 9028 15799 17389 18056 31598 34778 63196 69556 121723 126392 139112 243446 486892 643393 973784 1060729 1286786 2121458 2573572 4242916 4503751 5147144 7425103 8485832 9007502 14850206 18015004 29700412 36030008 39246973 59400824 78493946 156987892 274728811 313975784 549457622 1098915244 2197830488