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12718470 = 235423949
BaseRepresentation
bin110000100001…
…000110000110
3212221011110110
4300201012012
511223442340
61132333450
7213051042
oct60410606
925834413
1012718470
1171a7636
124314286
13283402b
141991022
1511b3680
hexc21186

12718470 has 16 divisors (see below), whose sum is σ = 30524400. Its totient is φ = 3391584.

The previous prime is 12718469. The next prime is 12718477. The reversal of 12718470 is 7481721.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 423949 = 12718470 / (1 + 2 + 7 + 1 + 8 + 4 + 7 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12718477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211945 + ... + 212004.

It is an arithmetic number, because the mean of its divisors is an integer number (1907775).

Almost surely, 212718470 is an apocalyptic number.

12718470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12718470 is an abundant number, since it is smaller than the sum of its proper divisors (17805930).

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

12718470 is a wasteful number, since it uses less digits than its factorization.

12718470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423959.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 12718470 is about 3566.2963982260. The cubic root of 12718470 is about 233.4237042235.

The spelling of 12718470 in words is "twelve million, seven hundred eighteen thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 423949 847898 1271847 2119745 2543694 4239490 6359235 12718470