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1297555484 = 221013211771
BaseRepresentation
bin100110101010111…
…0010000000011100
310100102120122111112
41031111302000130
510124133233414
6332431041152
744104016411
oct11525620034
93312518445
101297555484
11606488705
123026701b8
13178a90414
14c4486108
1578daad3e
hex4d57201c

1297555484 has 12 divisors (see below), whose sum is σ = 2293205208. Its totient is φ = 642354000.

The previous prime is 1297555471. The next prime is 1297555489. The reversal of 1297555484 is 4845557921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297555489) 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 3 ways as a sum of consecutive naturals, for example, 1605482 + ... + 1606289.

It is an arithmetic number, because the mean of its divisors is an integer number (191100434).

Almost surely, 21297555484 is an apocalyptic number.

It is an amenable number.

1297555484 is a deficient number, since it is larger than the sum of its proper divisors (995649724).

1297555484 is a wasteful number, since it uses less digits than its factorization.

1297555484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211876 (or 3211874 counting only the distinct ones).

The product of its digits is 2016000, while the sum is 50.

The square root of 1297555484 is about 36021.5974659648. The cubic root of 1297555484 is about 1090.7083698898.

The spelling of 1297555484 in words is "one billion, two hundred ninety-seven million, five hundred fifty-five thousand, four hundred eighty-four".

Divisors: 1 2 4 101 202 404 3211771 6423542 12847084 324388871 648777742 1297555484