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48020281 = 137409857
BaseRepresentation
bin1011011100101…
…1101100111001
310100100200102221
42313023230321
544243122111
64433124041
71122110551
oct267135471
9110320387
1048020281
1125119391
12140b9621
139c4428a
146540161
154338371
hex2dcbb39

48020281 has 8 divisors (see below), whose sum is σ = 48545640. Its totient is φ = 47497728.

The previous prime is 48020263. The next prime is 48020299. The reversal of 48020281 is 18202084.

It is an interprime number because it is at equal distance from previous prime (48020263) and next prime (48020299).

It can be written as a sum of positive squares in 4 ways, for example, as 31136400 + 16883881 = 5580^2 + 4109^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 48020281 - 25 = 48020249 is a prime.

It is a super-2 number, since 2×480202812 = 4611894774637922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48020221) 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, 55605 + ... + 56461.

It is an arithmetic number, because the mean of its divisors is an integer number (6068205).

Almost surely, 248020281 is an apocalyptic number.

It is an amenable number.

48020281 is a deficient number, since it is larger than the sum of its proper divisors (525359).

48020281 is a wasteful number, since it uses less digits than its factorization.

48020281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 48020281 is about 6929.6667308031. Note that the first 3 decimals coincide. The cubic root of 48020281 is about 363.4752961131.

The spelling of 48020281 in words is "forty-eight million, twenty thousand, two hundred eighty-one".

Divisors: 1 137 409 857 56033 117409 350513 48020281