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12975950 = 2521319963
BaseRepresentation
bin110001011111…
…111101001110
3220102020122202
4301133331032
511310212300
61142041502
7215202521
oct61377516
926366582
1012975950
117363029
124419292
1328c42a0
141a1abb8
151214ad5
hexc5ff4e

12975950 has 24 divisors (see below), whose sum is σ = 25993128. Its totient is φ = 4790880.

The previous prime is 12975899. The next prime is 12975953. The reversal of 12975950 is 5957921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12975953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9332 + ... + 10631.

It is an arithmetic number, because the mean of its divisors is an integer number (1083047).

Almost surely, 212975950 is an apocalyptic number.

12975950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12975950 is an abundant number, since it is smaller than the sum of its proper divisors (13017178).

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

12975950 is a wasteful number, since it uses less digits than its factorization.

12975950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19988 (or 19983 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 38.

The square root of 12975950 is about 3602.2145966058. The cubic root of 12975950 is about 234.9883802916.

The spelling of 12975950 in words is "twelve million, nine hundred seventy-five thousand, nine hundred fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 19963 39926 99815 199630 259519 499075 519038 998150 1297595 2595190 6487975 12975950