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12992469 = 371394451
BaseRepresentation
bin110001100011…
…111111010101
3220110002022120
4301203333111
511311224334
61142250153
7215301630
oct61437725
926402276
1012992469
117374486
124426959
1328cb969
141a22c17
151219949
hexc63fd5

12992469 has 16 divisors (see below), whose sum is σ = 19944960. Its totient is φ = 7369200.

The previous prime is 12992461. The next prime is 12992479. The reversal of 12992469 is 96429921.

It is not a de Polignac number, because 12992469 - 23 = 12992461 is a prime.

It is a super-2 number, since 2×129924692 = 337608501431922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12992469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12992461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 694 + ... + 5144.

It is an arithmetic number, because the mean of its divisors is an integer number (1246560).

Almost surely, 212992469 is an apocalyptic number.

It is an amenable number.

12992469 is a deficient number, since it is larger than the sum of its proper divisors (6952491).

12992469 is a wasteful number, since it uses less digits than its factorization.

12992469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4600.

The product of its digits is 69984, while the sum is 42.

The square root of 12992469 is about 3604.5067623740. The cubic root of 12992469 is about 235.0880551257.

The spelling of 12992469 in words is "twelve million, nine hundred ninety-two thousand, four hundred sixty-nine".

Divisors: 1 3 7 21 139 417 973 2919 4451 13353 31157 93471 618689 1856067 4330823 12992469