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48143809 = 78837789
BaseRepresentation
bin1011011110100…
…1110111000001
310100120221220001
42313221313001
544311100214
64435520001
71123133650
oct267516701
9110527801
1048143809
11251a317a
1214159001
139c8857c
146573197
15435ec74
hex2de9dc1

48143809 has 8 divisors (see below), whose sum is σ = 55090880. Its totient is φ = 41214096.

The previous prime is 48143803. The next prime is 48143827. The reversal of 48143809 is 90834184.

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

It is not a de Polignac number, because 48143809 - 23 = 48143801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48143801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2287 + ... + 10075.

It is an arithmetic number, because the mean of its divisors is an integer number (6886360).

Almost surely, 248143809 is an apocalyptic number.

It is an amenable number.

48143809 is a deficient number, since it is larger than the sum of its proper divisors (6947071).

48143809 is an equidigital number, since it uses as much as digits as its factorization.

48143809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8679.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 48143809 is about 6938.5739889404. The cubic root of 48143809 is about 363.7866987847.

The spelling of 48143809 in words is "forty-eight million, one hundred forty-three thousand, eight hundred nine".

Divisors: 1 7 883 6181 7789 54523 6877687 48143809