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49742471 = 412127233
BaseRepresentation
bin1011110111000…
…0001010000111
310110121011211202
42331300022013
5100213224341
64534053115
71142542532
oct275601207
9113534752
1049742471
1126095289
12147aa19b
13a3c811c
14686ba19
15457879b
hex2f70287

49742471 has 12 divisors (see below), whose sum is σ = 51607296. Its totient is φ = 47940480.

The previous prime is 49742447. The next prime is 49742479. The reversal of 49742471 is 17424794.

49742471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-49742471 is a prime.

It is a super-3 number, since 3×497424713 (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49742479) 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 11 ways as a sum of consecutive naturals, for example, 213371 + ... + 213603.

It is an arithmetic number, because the mean of its divisors is an integer number (4300608).

Almost surely, 249742471 is an apocalyptic number.

49742471 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

49742471 is a deficient number, since it is larger than the sum of its proper divisors (1864825).

49742471 is a wasteful number, since it uses less digits than its factorization.

49742471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 401 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 49742471 is about 7052.8342529794. The cubic root of 49742471 is about 367.7695642060.

The spelling of 49742471 in words is "forty-nine million, seven hundred forty-two thousand, four hundred seventy-one".

Divisors: 1 41 127 233 1681 5207 9553 29591 213487 391673 1213231 49742471