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12480789 = 323277653
BaseRepresentation
bin101111100111…
…000100010101
3212111002102110
4233213010111
511143341124
61123301233
7211041066
oct57470425
925432373
1012480789
117055002
12421a819
13277caa9
14192c56d
151168029
hexbe7115

12480789 has 16 divisors (see below), whose sum is σ = 17453952. Its totient is φ = 7917888.

The previous prime is 12480781. The next prime is 12480823. The reversal of 12480789 is 98708421.

It is not a de Polignac number, because 12480789 - 23 = 12480781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12480781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18787 + ... + 19439.

It is an arithmetic number, because the mean of its divisors is an integer number (1090872).

Almost surely, 212480789 is an apocalyptic number.

It is an amenable number.

12480789 is a deficient number, since it is larger than the sum of its proper divisors (4973163).

12480789 is a wasteful number, since it uses less digits than its factorization.

12480789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 12480789 is about 3532.8160155887. The cubic root of 12480789 is about 231.9604879698.

The spelling of 12480789 in words is "twelve million, four hundred eighty thousand, seven hundred eighty-nine".

Divisors: 1 3 23 69 277 653 831 1959 6371 15019 19113 45057 180881 542643 4160263 12480789