1326920 has 48 divisors (see below), whose sum is σ = 3478140. Its totient is φ = 454272.

The previous prime is 1326917. The next prime is 1326929. The reversal of 1326920 is 296231.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 103684 = 1106^2 + 322^2 .

It is not an unprimeable number, because it can be changed into a prime (1326929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1622 + ... + 2298.

2^1326920 is an apocalyptic number.

1326920 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 1326920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739070).

1326920 is an abundant number, since it is smaller than the sum of its proper divisors (2151220).

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

1326920 is a wasteful number, since it uses less digits than its factorization.

1326920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 1326920 is about 1151.9201361206. The cubic root of 1326920 is about 109.8874882642.

The spelling of 1326920 in words is "one million, three hundred twenty-six thousand, nine hundred twenty".