1353640 has 32 divisors (see below), whose sum is σ = 3120480. Its totient is φ = 528192.

The previous prime is 1353629. The next prime is 1353641. The reversal of 1353640 is 463531.

It is not an unprimeable number, because it can be changed into a prime (1353641) 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, 1327 + ... + 2113.

It is an arithmetic number, because the mean of its divisors is an integer number (97515).

2^1353640 is an apocalyptic number.

1353640 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 1353640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1560240).

1353640 is an abundant number, since it is smaller than the sum of its proper divisors (1766840).

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

1353640 is a wasteful number, since it uses less digits than its factorization.

1353640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1353640 is about 1163.4603560070. The cubic root of 1353640 is about 110.6201882210.

The spelling of 1353640 in words is "one million, three hundred fifty-three thousand, six hundred forty".