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297913149 = 32181199919
BaseRepresentation
bin10001110000011…
…100101100111101
3202202120120000100
4101300130230331
51102231210044
645321151313
710245135312
oct2160345475
9682516010
10297913149
11143189616
128392b539
1349949c91
142b7ccd09
151b24a869
hex11c1cb3d

297913149 has 24 divisors (see below), whose sum is σ = 435344000. Its totient is φ = 196305120.

The previous prime is 297913129. The next prime is 297913153. The reversal of 297913149 is 941319792.

It is a de Polignac number, because none of the positive numbers 2k-297913149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297913129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323712 + ... + 324630.

Almost surely, 2297913149 is an apocalyptic number.

It is an amenable number.

297913149 is a deficient number, since it is larger than the sum of its proper divisors (137430851).

297913149 is a wasteful number, since it uses less digits than its factorization.

297913149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305 (or 1302 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 297913149 is about 17260.1607466443. The cubic root of 297913149 is about 667.8771071152.

The spelling of 297913149 in words is "two hundred ninety-seven million, nine hundred thirteen thousand, one hundred forty-nine".

Divisors: 1 3 9 181 199 543 597 919 1629 1791 2757 8271 36019 108057 166339 182881 324171 499017 548643 1497051 1645929 33101461 99304383 297913149