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155830339 = 7215121061
BaseRepresentation
bin10010100100111…
…00100001000011
3101212020000001001
421102130201003
5304343032324
623243552431
73601351600
oct1122344103
9355200031
10155830339
117aa64705
124422b717
1326390902
14169a56a7
15da31e44
hex949c843

155830339 has 12 divisors (see below), whose sum is σ = 182481168. Its totient is φ = 132678000.

The previous prime is 155830327. The next prime is 155830357. The reversal of 155830339 is 933038551.

It is a de Polignac number, because none of the positive numbers 2k-155830339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155830298 and 155830307.

It is not an unprimeable number, because it can be changed into a prime (155830139) 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 11 ways as a sum of consecutive naturals, for example, 3132 + ... + 17929.

It is an arithmetic number, because the mean of its divisors is an integer number (15206764).

Almost surely, 2155830339 is an apocalyptic number.

155830339 is a deficient number, since it is larger than the sum of its proper divisors (26650829).

155830339 is a wasteful number, since it uses less digits than its factorization.

155830339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21226 (or 21219 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 155830339 is about 12483.2022734553. The cubic root of 155830339 is about 538.1260363080.

The spelling of 155830339 in words is "one hundred fifty-five million, eight hundred thirty thousand, three hundred thirty-nine".

Divisors: 1 7 49 151 1057 7399 21061 147427 1031989 3180211 22261477 155830339