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48681881 = 431112951
BaseRepresentation
bin1011100110110…
…1001110011001
310101121021222122
42321231032121
544430310011
64455231025
71130534453
oct271551631
9111537878
1048681881
1125530466
1214378475
13a116461
1466732d3
1544193db
hex2e6d399

48681881 has 4 divisors (see below), whose sum is σ = 48795264. Its totient is φ = 48568500.

The previous prime is 48681859. The next prime is 48681901. The reversal of 48681881 is 18818684.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 48681881 - 214 = 48665497 is a prime.

It is a super-2 number, since 2×486818812 = 4739851075396322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48681821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56045 + ... + 56906.

It is an arithmetic number, because the mean of its divisors is an integer number (12198816).

Almost surely, 248681881 is an apocalyptic number.

It is an amenable number.

48681881 is a deficient number, since it is larger than the sum of its proper divisors (113383).

48681881 is a wasteful number, since it uses less digits than its factorization.

48681881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113382.

The product of its digits is 98304, while the sum is 44.

The square root of 48681881 is about 6977.2402137235. The cubic root of 48681881 is about 365.1369499228.

The spelling of 48681881 in words is "forty-eight million, six hundred eighty-one thousand, eight hundred eighty-one".

Divisors: 1 431 112951 48681881