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12149470 = 251214947
BaseRepresentation
bin101110010110…
…001011011110
3211212020221101
4232112023132
511102240340
61112223314
7205161124
oct56261336
924766841
1012149470
116949093
12409ab3a
132695048
141883914
1510eec9a
hexb962de

12149470 has 8 divisors (see below), whose sum is σ = 21869064. Its totient is φ = 4859784.

The previous prime is 12149461. The next prime is 12149471. The reversal of 12149470 is 7494121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607464 + ... + 607483.

It is an arithmetic number, because the mean of its divisors is an integer number (2733633).

Almost surely, 212149470 is an apocalyptic number.

12149470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12149470 is a deficient number, since it is larger than the sum of its proper divisors (9719594).

12149470 is a wasteful number, since it uses less digits than its factorization.

12149470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214954.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 12149470 is about 3485.6089855289. The cubic root of 12149470 is about 229.8894869205.

The spelling of 12149470 in words is "twelve million, one hundred forty-nine thousand, four hundred seventy".

Divisors: 1 2 5 10 1214947 2429894 6074735 12149470