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12890630 = 2510112763
BaseRepresentation
bin110001001011…
…001000000110
3220020220121202
4301023020012
511300000010
61140142502
7214366004
oct61131006
926226552
1012890630
117304a15
124397a32
1328944bc
1419d7a74
1511e96a5
hexc4b206

12890630 has 16 divisors (see below), whose sum is σ = 23434704. Its totient is φ = 5104800.

The previous prime is 12890629. The next prime is 12890653. The reversal of 12890630 is 3609821.

It is a junction number, because it is equal to n+sod(n) for n = 12890593 and 12890602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5372 + ... + 7391.

It is an arithmetic number, because the mean of its divisors is an integer number (1464669).

Almost surely, 212890630 is an apocalyptic number.

12890630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12890630 is a deficient number, since it is larger than the sum of its proper divisors (10544074).

12890630 is a wasteful number, since it uses less digits than its factorization.

12890630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12871.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12890630 is about 3590.3523503968. The cubic root of 12890630 is about 234.4722122365.

The spelling of 12890630 in words is "twelve million, eight hundred ninety thousand, six hundred thirty".

Divisors: 1 2 5 10 101 202 505 1010 12763 25526 63815 127630 1289063 2578126 6445315 12890630