1296040 has 16 divisors (see below), whose sum is σ = 2916180. Its totient is φ = 518400.

The previous prime is 1296037. The next prime is 1296041. The reversal of 1296040 is 406921.

It can be written as a sum of positive squares in 2 ways, for example, as 1170724 + 125316 = 1082^2 + 354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296041) 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, 16161 + ... + 16240.

2^1296040 is an apocalyptic number.

1296040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1296040 is an abundant number, since it is smaller than the sum of its proper divisors (1620140).

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

1296040 is a wasteful number, since it uses less digits than its factorization.

1296040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32412 (or 32408 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1296040 is about 1138.4375257343. The cubic root of 1296040 is about 109.0283572378.

It can be divided in two parts, 12960 and 40, that multiplied together give a square (518400 = 720²).

The spelling of 1296040 in words is "one million, two hundred ninety-six thousand, forty".