1340628 has 24 divisors (see below), whose sum is σ = 3196032. Its totient is φ = 437184.

The previous prime is 1340627. The next prime is 1340639. The reversal of 1340628 is 8260431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1340598 and 1340607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625 + ... + 1752.

It is an arithmetic number, because the mean of its divisors is an integer number (133168).

2^1340628 is an apocalyptic number.

It is an amenable number.

1340628 is an abundant number, since it is smaller than the sum of its proper divisors (1855404).

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

1340628 is a wasteful number, since it uses less digits than its factorization.

1340628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1340628 is about 1157.8549131908. The cubic root of 1340628 is about 110.2645971797.

The spelling of 1340628 in words is "one million, three hundred forty thousand, six hundred twenty-eight".