1356490 has 8 divisors (see below), whose sum is σ = 2441700. Its totient is φ = 542592.

The previous prime is 1356473. The next prime is 1356491. The reversal of 1356490 is 946531.

It can be written as a sum of positive squares in 2 ways, for example, as 1252161 + 104329 = 1119^2 + 323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1356491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67815 + ... + 67834.

2^1356490 is an apocalyptic number.

1356490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1356490 is a deficient number, since it is larger than the sum of its proper divisors (1085210).

1356490 is a wasteful number, since it uses less digits than its factorization.

1356490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135656.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 1356490 is about 1164.6845066369. The cubic root of 1356490 is about 110.6977683104.

The spelling of 1356490 in words is "one million, three hundred fifty-six thousand, four hundred ninety".