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12488881 is a prime number
BaseRepresentation
bin101111101001…
…000010110001
3212111111112011
4233221002301
511144121011
61123402521
7211103506
oct57510261
925444464
1012488881
117060099
124223441
132783692
1419314ad
15116a621
hexbe90b1

12488881 has 2 divisors, whose sum is σ = 12488882. Its totient is φ = 12488880.

The previous prime is 12488857. The next prime is 12488911. The reversal of 12488881 is 18888421.

12488881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 2146225 = 3216^2 + 1465^2 .

It is an emirp because it is prime and its reverse (18888421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12488881 - 29 = 12488369 is a prime.

It is a super-2 number, since 2×124888812 = 311944297264322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12488831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6244440 + 6244441.

It is an arithmetic number, because the mean of its divisors is an integer number (6244441).

Almost surely, 212488881 is an apocalyptic number.

It is an amenable number.

12488881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12488881 is an equidigital number, since it uses as much as digits as its factorization.

12488881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32768, while the sum is 40.

The square root of 12488881 is about 3533.9610920326. The cubic root of 12488881 is about 232.0106081654.

The spelling of 12488881 in words is "twelve million, four hundred eighty-eight thousand, eight hundred eighty-one".