12720570 has 16 divisors (see below), whose sum is σ = 30529440. Its totient is φ = 3392144.

The previous prime is 12720569. The next prime is 12720581. The reversal of 12720570 is 7502721.

It is a super-2 number, since 2×12720570² = 323625802249800, 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 12720570.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 211980 + ... + 212039.

It is an arithmetic number, because the mean of its divisors is an integer number (1908090).

Almost surely, 2^12720570 is an apocalyptic number.

12720570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12720570 is an abundant number, since it is smaller than the sum of its proper divisors (17808870).

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

12720570 is a wasteful number, since it uses less digits than its factorization.

12720570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424029.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 12720570 is about 3566.5908091622. The cubic root of 12720570 is about 233.4365507059.

The spelling of 12720570 in words is "twelve million, seven hundred twenty thousand, five hundred seventy".