1355438 has 12 divisors (see below), whose sum is σ = 2365272. Its totient is φ = 580860.

The previous prime is 1355429. The next prime is 1355443. The reversal of 1355438 is 8345531.

It is a self number, because there is not a number n which added to its sum of digits gives 1355438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6818 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (197106).

2^1355438 is an apocalyptic number.

1355438 is a deficient number, since it is larger than the sum of its proper divisors (1009834).

1355438 is a wasteful number, since it uses less digits than its factorization.

1355438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13847 (or 13840 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 1355438 is about 1164.2327945905. The cubic root of 1355438 is about 110.6691443938.

The spelling of 1355438 in words is "one million, three hundred fifty-five thousand, four hundred thirty-eight".