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48118191 = 3112711867
BaseRepresentation
bin1011011110001…
…1100110101111
310100112122202020
42313203212233
544304240231
64435201223
71122666162
oct267434657
9110478666
1048118191
1125185a00
1214146213
139c79a04
146567ad9
154357396
hex2de39af

48118191 has 24 divisors (see below), whose sum is σ = 71551872. Its totient is φ = 28736400.

The previous prime is 48118157. The next prime is 48118193. The reversal of 48118191 is 19181184.

It is not a de Polignac number, because 48118191 - 218 = 47856047 is a prime.

It is a super-2 number, since 2×481181912 = 4630720610224962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48118193) 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 23 ways as a sum of consecutive naturals, for example, 24840 + ... + 26706.

It is an arithmetic number, because the mean of its divisors is an integer number (2981328).

Almost surely, 248118191 is an apocalyptic number.

48118191 is a deficient number, since it is larger than the sum of its proper divisors (23433681).

48118191 is a wasteful number, since it uses less digits than its factorization.

48118191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963 (or 1952 counting only the distinct ones).

The product of its digits is 2304, while the sum is 33.

The square root of 48118191 is about 6936.7276867411. The cubic root of 48118191 is about 363.7221619914.

The spelling of 48118191 in words is "forty-eight million, one hundred eighteen thousand, one hundred ninety-one".

Divisors: 1 3 11 33 71 121 213 363 781 1867 2343 5601 8591 20537 25773 61611 132557 225907 397671 677721 1458127 4374381 16039397 48118191