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48928191 = 3132943261
BaseRepresentation
bin1011101010100…
…1010110111111
310102001210212020
42322221112333
5100011200231
64504411223
71132611534
oct272512677
9112053766
1048928191
1125689524
1214476b13
13a1a15c0
1466d8d8b
154467396
hex2ea95bf

48928191 has 16 divisors (see below), whose sum is σ = 72680160. Its totient is φ = 29070720.

The previous prime is 48928189. The next prime is 48928213. The reversal of 48928191 is 19182984.

It is not a de Polignac number, because 48928191 - 21 = 48928189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48928111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20500 + ... + 22761.

It is an arithmetic number, because the mean of its divisors is an integer number (4542510).

Almost surely, 248928191 is an apocalyptic number.

48928191 is a deficient number, since it is larger than the sum of its proper divisors (23751969).

48928191 is a wasteful number, since it uses less digits than its factorization.

48928191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43306.

The product of its digits is 41472, while the sum is 42.

The square root of 48928191 is about 6994.8689051332. The cubic root of 48928191 is about 365.7517277702.

It can be divided in two parts, 489 and 28191, that added together give a triangular number (28680 = T239).

The spelling of 48928191 in words is "forty-eight million, nine hundred twenty-eight thousand, one hundred ninety-one".

Divisors: 1 3 13 29 39 87 377 1131 43261 129783 562393 1254569 1687179 3763707 16309397 48928191