1308890 has 32 divisors (see below), whose sum is σ = 2621376. Its totient is φ = 466560.

The previous prime is 1308887. The next prime is 1308899. The reversal of 1308890 is 988031.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7949 + ... + 8111.

It is an arithmetic number, because the mean of its divisors is an integer number (81918).

2^1308890 is an apocalyptic number.

1308890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1308890 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1308890 is a wasteful number, since it uses less digits than its factorization.

1308890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1308890 is about 1144.0673057124. The cubic root of 1308890 is about 109.3875049648.

The spelling of 1308890 in words is "one million, three hundred eight thousand, eight hundred ninety".