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12890577 = 37287691
BaseRepresentation
bin110001001011…
…000111010001
3220020220112210
4301023013101
511244444302
61140142333
7214365600
oct61130721
926226483
1012890577
117304977
1243979a9
13289447b
1419d7a37
1511e966c
hexc4b1d1

12890577 has 12 divisors (see below), whose sum is σ = 19993776. Its totient is φ = 7365960.

The previous prime is 12890567. The next prime is 12890597. The reversal of 12890577 is 77509821.

It is not a de Polignac number, because 12890577 - 24 = 12890561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12890567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43699 + ... + 43992.

It is an arithmetic number, because the mean of its divisors is an integer number (1666148).

Almost surely, 212890577 is an apocalyptic number.

It is an amenable number.

12890577 is a deficient number, since it is larger than the sum of its proper divisors (7103199).

12890577 is an equidigital number, since it uses as much as digits as its factorization.

12890577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87708 (or 87701 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 12890577 is about 3590.3449694981. The cubic root of 12890577 is about 234.4718908908.

The spelling of 12890577 in words is "twelve million, eight hundred ninety thousand, five hundred seventy-seven".

Divisors: 1 3 7 21 49 147 87691 263073 613837 1841511 4296859 12890577