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68297151 = 3138532053
BaseRepresentation
bin1000001001000…
…10000110111111
311202111212002010
410010202012333
5114441002101
610435502303
71456342026
oct404420677
9152455063
1068297151
113560872a
121aa57993
13111c3720
1490db8bd
155ee12d6
hex41221bf

68297151 has 16 divisors (see below), whose sum is σ = 98230496. Its totient is φ = 41959296.

The previous prime is 68297093. The next prime is 68297167. The reversal of 68297151 is 15179286.

It is not a de Polignac number, because 68297151 - 27 = 68297023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68293151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32241 + ... + 34293.

It is an arithmetic number, because the mean of its divisors is an integer number (6139406).

Almost surely, 268297151 is an apocalyptic number.

68297151 is a deficient number, since it is larger than the sum of its proper divisors (29933345).

68297151 is a wasteful number, since it uses less digits than its factorization.

68297151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2922.

The product of its digits is 30240, while the sum is 39.

The square root of 68297151 is about 8264.2090365624. The cubic root of 68297151 is about 408.7591893491.

The spelling of 68297151 in words is "sixty-eight million, two hundred ninety-seven thousand, one hundred fifty-one".

Divisors: 1 3 13 39 853 2053 2559 6159 11089 26689 33267 80067 1751209 5253627 22765717 68297151