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139792188 = 22311649349
BaseRepresentation
bin10000101010100…
…00111100111100
3100202001011211110
420111100330330
5241241322223
621512122020
73315133254
oct1025207474
9322034743
10139792188
11719aaa38
123a996310
1322c66893
14147cc964
15c414d93
hex8550f3c

139792188 has 12 divisors (see below), whose sum is σ = 326181800. Its totient is φ = 46597392.

The previous prime is 139792171. The next prime is 139792189. The reversal of 139792188 is 881297931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139792189) 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, 5824663 + ... + 5824686.

Almost surely, 2139792188 is an apocalyptic number.

It is an amenable number.

139792188 is an abundant number, since it is smaller than the sum of its proper divisors (186389612).

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

139792188 is a wasteful number, since it uses less digits than its factorization.

139792188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11649356 (or 11649354 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 139792188 is about 11823.3746451679. The cubic root of 139792188 is about 518.9923632958.

The spelling of 139792188 in words is "one hundred thirty-nine million, seven hundred ninety-two thousand, one hundred eighty-eight".

Divisors: 1 2 3 4 6 12 11649349 23298698 34948047 46597396 69896094 139792188