11505012 has 24 divisors (see below), whose sum is σ = 26915616. Its totient is φ = 3824928.

The previous prime is 11505001. The next prime is 11505017. The reversal of 11505012 is 21050511.

It is a super-3 number, since 3×11505012³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 11504982 and 11505000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505017) 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, 4578 + ... + 6630.

It is an arithmetic number, because the mean of its divisors is an integer number (1121484).

Almost surely, 2^11505012 is an apocalyptic number.

11505012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11505012 is an abundant number, since it is smaller than the sum of its proper divisors (15410604).

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

11505012 is a wasteful number, since it uses less digits than its factorization.

11505012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527 (or 2525 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 11505012 is about 3391.9038901478. The cubic root of 11505012 is about 225.7506582567.

Adding to 11505012 its reverse (21050511), we get a palindrome (32555523).

The spelling of 11505012 in words is "eleven million, five hundred five thousand, twelve".