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12898470 = 2351333073
BaseRepresentation
bin110001001101…
…000010100110
3220021022101010
4301031002212
511300222340
61140243050
7214430604
oct61150246
926238333
1012898470
11730a8a2
1243a0486
132897c40
1419da874
1511ebb80
hexc4d0a6

12898470 has 32 divisors (see below), whose sum is σ = 33338592. Its totient is φ = 3174912.

The previous prime is 12898463. The next prime is 12898471. The reversal of 12898470 is 7489821.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12898471) 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, 16147 + ... + 16926.

It is an arithmetic number, because the mean of its divisors is an integer number (1041831).

Almost surely, 212898470 is an apocalyptic number.

12898470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12898470 is an abundant number, since it is smaller than the sum of its proper divisors (20440122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12898470 is a wasteful number, since it uses less digits than its factorization.

12898470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33096.

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

The square root of 12898470 is about 3591.4439992850. The cubic root of 12898470 is about 234.5197374440.

The spelling of 12898470 in words is "twelve million, eight hundred ninety-eight thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 33073 66146 99219 165365 198438 330730 429949 496095 859898 992190 1289847 2149745 2579694 4299490 6449235 12898470