12849520 has 20 divisors (see below), whose sum is σ = 29875320. Its totient is φ = 5139776.

The previous prime is 12849517. The next prime is 12849527. The reversal of 12849520 is 2594821.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×12849520² = 330220328460800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12849527) 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, 80230 + ... + 80389.

It is an arithmetic number, because the mean of its divisors is an integer number (1493766).

Almost surely, 2^12849520 is an apocalyptic number.

12849520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12849520 is an abundant number, since it is smaller than the sum of its proper divisors (17025800).

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

12849520 is a wasteful number, since it uses less digits than its factorization.

12849520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160632 (or 160626 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 12849520 is about 3584.6227137594. The cubic root of 12849520 is about 234.2226920371. Note that the first 3 decimals are identical.

The spelling of 12849520 in words is "twelve million, eight hundred forty-nine thousand, five hundred twenty".