12705020 has 12 divisors (see below), whose sum is σ = 26680584. Its totient is φ = 5082000.

The previous prime is 12704999. The next prime is 12705031. The reversal of 12705020 is 2050721.

It is a super-2 number, since 2×12705020² = 322835066400800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12705020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317606 + ... + 317645.

It is an arithmetic number, because the mean of its divisors is an integer number (2223382).

Almost surely, 2^12705020 is an apocalyptic number.

12705020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12705020 is an abundant number, since it is smaller than the sum of its proper divisors (13975564).

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

12705020 is a wasteful number, since it uses less digits than its factorization.

12705020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635260 (or 635258 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 12705020 is about 3564.4101896387. The cubic root of 12705020 is about 233.3413920119.

Adding to 12705020 its reverse (2050721), we get a palindrome (14755741).

The spelling of 12705020 in words is "twelve million, seven hundred five thousand, twenty".