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48928905 = 3251087309
BaseRepresentation
bin1011101010100…
…1100010001001
310102001211211200
42322221202021
5100011211110
64504414413
71132613604
oct272514211
9112054750
1048928905
112568a013
1214477409
13a1a1a1c
1466d933b
1544676c0
hex2ea9889

48928905 has 12 divisors (see below), whose sum is σ = 84810180. Its totient is φ = 26095392.

The previous prime is 48928903. The next prime is 48928921. The reversal of 48928905 is 50982984.

It can be written as a sum of positive squares in 2 ways, for example, as 26998416 + 21930489 = 5196^2 + 4683^2 .

It is not a de Polignac number, because 48928905 - 21 = 48928903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1087309 = 48928905 / (4 + 8 + 9 + 2 + 8 + 9 + 0 + 5).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48928903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543610 + ... + 543699.

It is an arithmetic number, because the mean of its divisors is an integer number (7067515).

Almost surely, 248928905 is an apocalyptic number.

48928905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

48928905 is a deficient number, since it is larger than the sum of its proper divisors (35881275).

48928905 is a wasteful number, since it uses less digits than its factorization.

48928905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087320 (or 1087317 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 48928905 is about 6994.9199423582. The cubic root of 48928905 is about 365.7535068773.

The spelling of 48928905 in words is "forty-eight million, nine hundred twenty-eight thousand, nine hundred five".

Divisors: 1 3 5 9 15 45 1087309 3261927 5436545 9785781 16309635 48928905