1340928 has 80 divisors (see below), whose sum is σ = 4010160. Its totient is φ = 442368.

The previous prime is 1340903. The next prime is 1340929. The reversal of 1340928 is 8290431.

It is a super-3 number, since 3×1340928³ = 7233319239476576256, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13776 + ... + 13872.

It is an arithmetic number, because the mean of its divisors is an integer number (50127).

2^1340928 is an apocalyptic number.

1340928 is a gapful number since it is divisible by the number (18) 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 1340928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005080).

1340928 is an abundant number, since it is smaller than the sum of its proper divisors (2669232).

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

1340928 is an frugal number, since it uses more digits than its factorization.

1340928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1340928 is about 1157.9844558542. The cubic root of 1340928 is about 110.2728214130.

The spelling of 1340928 in words is "one million, three hundred forty thousand, nine hundred twenty-eight".