12812040 has 64 divisors (see below), whose sum is σ = 42710400. Its totient is φ = 3416256.

The previous prime is 12811993. The next prime is 12812057. The reversal of 12812040 is 4021821.

12812040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4852 + ... + 7011.

It is an arithmetic number, because the mean of its divisors is an integer number (667350).

Almost surely, 2^12812040 is an apocalyptic number.

12812040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12812040 is an abundant number, since it is smaller than the sum of its proper divisors (29898360).

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

12812040 is a wasteful number, since it uses less digits than its factorization.

12812040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11883 (or 11873 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 12812040 is about 3579.3910096551. The cubic root of 12812040 is about 233.9947401842.

Adding to 12812040 its reverse (4021821), we get a palindrome (16833861).

It can be divided in two parts, 1281 and 2040, that added together give a triangular number (3321 = T₈₁).

The spelling of 12812040 in words is "twelve million, eight hundred twelve thousand, forty".