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49061789 = 724124421
BaseRepresentation
bin1011101100100…
…1111110011101
310102022121010022
42323021332131
5100024434124
64511321525
71134006200
oct273117635
9112277108
1049061789
112576a937
12145202a5
13a21a35a
146731937
154491c5e
hex2ec9f9d

49061789 has 12 divisors (see below), whose sum is σ = 58466268. Its totient is φ = 41025600.

The previous prime is 49061777. The next prime is 49061791. The reversal of 49061789 is 98716094.

It can be written as a sum of positive squares in 2 ways, for example, as 648025 + 48413764 = 805^2 + 6958^2 .

It is not a de Polignac number, because 49061789 - 212 = 49057693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49061489) 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 11 ways as a sum of consecutive naturals, for example, 10202 + ... + 14219.

It is an arithmetic number, because the mean of its divisors is an integer number (4872189).

Almost surely, 249061789 is an apocalyptic number.

49061789 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

49061789 is a deficient number, since it is larger than the sum of its proper divisors (9404479).

49061789 is a wasteful number, since it uses less digits than its factorization.

49061789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24476 (or 24469 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 49061789 is about 7004.4121095207. The cubic root of 49061789 is about 366.0843192116.

The spelling of 49061789 in words is "forty-nine million, sixty-one thousand, seven hundred eighty-nine".

Divisors: 1 7 41 49 287 2009 24421 170947 1001261 1196629 7008827 49061789