1296020 has 48 divisors (see below), whose sum is σ = 3060288. Its totient is φ = 456960.

The previous prime is 1296019. The next prime is 1296023. The reversal of 1296020 is 206921.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1295983 and 1296001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9392 + ... + 9528.

It is an arithmetic number, because the mean of its divisors is an integer number (63756).

2^1296020 is an apocalyptic number.

1296020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530144).

1296020 is an abundant number, since it is smaller than the sum of its proper divisors (1764268).

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

1296020 is a wasteful number, since it uses less digits than its factorization.

1296020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1296020 is about 1138.4287417313. The cubic root of 1296020 is about 109.0277964067.

The spelling of 1296020 in words is "one million, two hundred ninety-six thousand, twenty".