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11213512 = 232360943
BaseRepresentation
bin101010110001…
…101011001000
3210002201001021
4222301223020
510332313022
61040202224
7164212312
oct52615310
923081037
1011213512
116369972
123909374
13242801b
1416bc7b2
15eb77c7
hexab1ac8

11213512 has 16 divisors (see below), whose sum is σ = 21939840. Its totient is φ = 5362896.

The previous prime is 11213509. The next prime is 11213513. The reversal of 11213512 is 21531211.

It is not an unprimeable number, because it can be changed into a prime (11213513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30288 + ... + 30655.

It is an arithmetic number, because the mean of its divisors is an integer number (1371240).

Almost surely, 211213512 is an apocalyptic number.

It is an amenable number.

11213512 is a deficient number, since it is larger than the sum of its proper divisors (10726328).

11213512 is a wasteful number, since it uses less digits than its factorization.

11213512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60972 (or 60968 counting only the distinct ones).

The product of its digits is 60, while the sum is 16.

The square root of 11213512 is about 3348.6582387577. The cubic root of 11213512 is about 223.8277268114.

Adding to 11213512 its reverse (21531211), we get a palindrome (32744723).

It can be divided in two parts, 112135 and 12, that multiplied together give a triangular number (1345620 = T1640).

The spelling of 11213512 in words is "eleven million, two hundred thirteen thousand, five hundred twelve".

Divisors: 1 2 4 8 23 46 92 184 60943 121886 243772 487544 1401689 2803378 5606756 11213512