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49215089 = 711639157
BaseRepresentation
bin1011101110111…
…1011001110001
310102121101102002
42323233121301
5100044340324
64514503345
71135215140
oct273573161
9112541362
1049215089
1125865030
1214594b55
13a272071
146771757
1544c23ae
hex2eef671

49215089 has 8 divisors (see below), whose sum is σ = 61359168. Its totient is φ = 38349360.

The previous prime is 49215083. The next prime is 49215097. The reversal of 49215089 is 98051294.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-49215089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49215083) 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 7 ways as a sum of consecutive naturals, for example, 319502 + ... + 319655.

It is an arithmetic number, because the mean of its divisors is an integer number (7669896).

Almost surely, 249215089 is an apocalyptic number.

It is an amenable number.

49215089 is a deficient number, since it is larger than the sum of its proper divisors (12144079).

49215089 is a wasteful number, since it uses less digits than its factorization.

49215089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639175.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 49215089 is about 7015.3466771073. The cubic root of 49215089 is about 366.4652156033.

The spelling of 49215089 in words is "forty-nine million, two hundred fifteen thousand, eighty-nine".

Divisors: 1 7 11 77 639157 4474099 7030727 49215089